I need help with my css stylesheet

Hello everyone,
I really need help with my website fonts:-
*-I want to make the font of the posts larger more 1 time.
*-I want to change the link color to blue.

and here is the CSS code:

/*-----------Block Level Elements--------------*/

Body {
background:#2e3a2e url(images/bg.jpg) fixed repeat-x;
margin:0px;
padding:0px;
font:11px Verdana, Arial, Helvetica, sans-serif;
color:#333;
}

a { color:#802100; text-decoration:none; }
a:hover { color:#802100; text-decoration:underline; }

#page {
width: 900px;
margin: 0 auto;
padding:0px;
background:#f6f4dc url(images/bg_site.gif) repeat-y;
overflow:hidden;
}

#nav_top {
width:900px;
height:20px;
margin:0 auto;
padding-top:5px;
background-color:#062104;
}

/*-- NAVIGATION --*/

ul#navigation {
float:right;
list-style:none;
margin:0px;
padding-right:10px;
font-weight:bold;
text-transform:uppercase;
height:20px;
line-height:20px;
font-size:10px;
overflow:hidden;
}

ul#navigation li {
float:left;
margin:0px 1px 0px 1px;
padding:0;
list-style:none;
white-space:nowrap;
/*background-color:#f7f7f7;*/

}

ul#navigation li a {
display:block;
padding:0 5px;
text-transform:uppercase;
border:none;
color:#fff;
text-decoration:none;
}

ul#navigation li a:hover,ul#navigation li a:active, ul#navigation li.current_page_item a{
color:#f6b316;
/*background:#f0eada;*/
}

#header {
width: 900px;
height:80px;
margin: 0 auto;
padding:10px;
color:#fff;
overflow:hidden;
background:#265126 url(images/bg_header.jpg) repeat-x;
}

#headerimg {
width:550px;
height:88px;
padding:10px 0px 0px 20px;
margin:0px;
overflow:hidden;
float:left;
}

#headerimg h1, h1 a, h1 a:hover{
padding:0px;
margin:0px;
color:#fff;
text-decoration:none;
font-size:24px;
}

.description {
padding:0px;
margin:0px;
color:#fff;


}

#wrapper {
width: 100%;
padding:0px;
margin:0px;
}

#content {
float: right;
width: 559px;
padding:10px;
margin:0px;
}

#sidebar {
width: 130px;
float:left;
padding:0px;
margin-top:10px;
overflow:hidden;
}

#siderail {
width: 301px;
float:left;
padding:10px;
margin-top:0px;
background:url(images/bg_rail.jpg) top no-repeat;
}

#footer {
width: 900px;
clear: both;
padding:0px;
margin:0 auto;
overflow:hidden;
}

#footer .sub{
margin:0px;
color:#7c5700;
background-color: #e7a712;
text-align:right;
padding:5px;
}

#footer .sub a{
color:#7c5700;
padding:0px;
margin:0px;
}
/*-- adsense container --*/

#link_unit_top_container{
height:20px;
padding-top:4px;
margin:0px;
background: #e7a712 url(images/bg_nav.png) no-repeat;
}

#link_unit_top {
width:728px;
height:15px;
padding:0px;
margin:0 auto;
}

#skyscraper_top {
background:url(images/side_box_top.jpg) right top no-repeat;
color:#fff;
font-size: 12px;
font-weight:bold;
padding:0px;
margin-top:10px;
overflow:hidden;
width: 163px;
float:right;
}

#link_unit_side_container{
width:120px;
padding:0px;
margin-left:10px;
margin-top:10px;
overflow:hidden;
}

#link_unit_side {
padding:0px;
margin-left:6px;
margin-top:0px;
overflow:hidden;
}

#skyscraper {
float:right;
width:160px;
border:0px solid #d8dfe6;
margin-top:0px;
padding-top:0px;
}

#leaderboard_container {
height:92px;
margin:0px;
padding:10px;
background-color:#f6f4dc;
}

#leaderboard {
width:728px;
height:90px;
margin:0 auto;
}

#half_banner {
width:234px;
margin:0 auto;
padding:0px;
}


search_container {
width:250px;
padding:0px;
margin:0px;
float:right;
}
/*-------------Headings-------------*/

h1 {
padding:0px;
margin:0px;
}

h2 {
padding:0px;
margin:0px;

}

h3 {
padding:0px;
margin:0px;

}

h4 {
padding:0px;
margin:0px;

}

h5 {
padding:0px;
margin:0px;

}

/*-------------The Post-------------*/

#title {
float:left;
width:550px;
padding:0px;
margin-bottom:10px;
}

#title .post_title {
padding-left:10px;
margin:0px;
float:left;
color:#62778c;
font-size:18px;
text-decoration:none;
}


.post_title {
padding-left:10px;
margin:0px;
float:left;
color:#62778c;
font-size:18px;
text-decoration:none;
}

#title .post_title a { color:#62778c; text-decoration:none; }

#title .post_title a:hover { color:#721b00; text-decoration:underline; }

#post h2 {
padding-left:10px;
float:left;
color:#62778c;
font-size:18px;
text-decoration:none;
}

.post {
padding:0px;
margin-bottom:20px;
}

#title_container {
margin:10px 0px;
width:556px;
float:left;
}



.post .title {
border-bottom:1px solid #dddbc6;
padding-bottom:2px;
margin:0px;
float:left;
width:490px;
font-size:18px;
}

.post a { color:#304030; text-decoration:none; }

.post a:hover { color:#721b00; text-decoration:none; }


.post p {
padding:0px;
}


.post ul {

}

.post li {

}

.post .entry {
padding:0px;
margin:10px 0px;
}

.entrytext .postmetadata {

}

.postmetadata alt {

}

.postmetadata a {

}

.navigation {

}

.alignleft {

}

.alignright {

}

.center {

}

.pagetitle {
padding-bottom:10px;
color:#666666;
}

blockquote {
border-left:2px solid #b9b79c;
padding-left:10px;
}

cite {

}

img {
float:left;
margin: 2px 10px 10px 0px;
}

img.center, img[align="center"] {
display: block;
margin-left: auto;
margin-right: auto;
}

img.left, img[align="left"] {
float:left;
margin: 2px 10px 5px 0px;
}

img.right, img[align="right"] {
float:right;
margin: 2px 0px 5px 10px;
}

acronym, abbr {

}



/* -- post info -- */

.post-info {
color:#999;
margin:0;
padding:10px 0;
border-top:#ccc 1px dashed;
clear:both;
font-size:0.9em;
}

.post-info em {
color:#666;
font-style:normal;
}

.post-info em.user {
background:url(images/user.gif) no-repeat left center;
padding:2px 0 2px 12px;
}

.post-info em.cat {
background:url(images/category.gif) no-repeat left center;
padding:2px 0 2px 12px;
}



.post-info a:link, .post-info a:visited {
border:none;
text-decoration:none;
color:#666;
}

.post-info a:hover, .post-info a:active {
border-bottom:1px dashed;
color:#721b00;
text-decoration:none;
}

.post-comments
{
float:right;
}
.post-comments a
{
background:url(images/comments-small.gif) no-repeat left center;
padding-left:12px;
color:#838e99;
}



#post_single {
border-bottom:1px dashed #ccc;
float:left;
width:550px;
padding:10px 0px 5px 0px;
}

#post_single_title {
float:left;
width:85px;
padding:0px;
margin:0px;
}

#post_single_description {
float:left;
width:450px;
padding:0px;
margin:0px;
}
/*--------------Sidebar------------*/
#sidebar {
width:120px;
padding:0px;
margin:0px;
color:#333;
float:left;
}

.side-title {
color:#802100;
font-size:12px;
}

.side-box {
padding:0px;
margin:5px 0px 10px 0px;
}

#sidebar ul h3 {
height:15px;
color:#fff;
font-size: 12px;
font-weight:bold;
padding:5px 5px;
}

#sidebar ul {
list-style: none;
margin: 0 ;
padding: 0 ;
}

#sidebar ul li {
background: url(images/bullet-orange.gif) no-repeat;
padding-left: 15px ;
line-height:18px;
margin:0px;
}

#sidebar ul li ul li {
background: url(images/bullet-grey.gif) no-repeat;
padding-left: 12px ;
}

#sidebar ul ul {
padding:0px;
margin:0px;
}

#sidebar ul ul li {
background-image:none;
}

#sidebar ul ul ul {

}

#sidebar p {

}

#sidebar a {
color:#333;
text-decoration:underline;

}
#sidebar a:hover {
color:#802100;
text-decoration:none;
}




/*--------------Comments--------------*/
#respond {
padding-top:20px;
margin-top:10px;
color:#006633;
}

ol.commentlist {

}

ol.commentlist li {

}

ol.commentlist li.alt {

}

ol.commentlist a {

}

small.commentmetadata {

}

/*--------------Search Form-------------*/

#searchform {
padding:0px;
margin:0px;
}

#searchform input {
border:1px solid #999999;
}

#searchform #s {
padding:0px;
margin:0px;

}


/*-------------Calendar-----------------*/

.post_date {
float:left;
color:#999;
font:18px Arial Narrrow, Helvetica, sans-serif;
font-weight:bolder;
}

#wp-calendar {

}

#wp-calendar th {

}

#wp-calendar a {

}

#prev a, #next a {

}

#wp-calendar caption {

}

#date {
float:left;
width:53px;
height:58px;
background:url(images/bg_date.jpg) no-repeat;
padding-left:3px;
margin-right:10px;
}

#date .y {
text-align:left;
font:10px bolder Verdana, Arial, Helvetica, sans-serif;
color:#f1af15;
font-weight:bold;
margin-top:-1px;
padding-left:6px;
}

#date .d {
text-align:center;
font:10px bolder Verdana, Arial, Helvetica, sans-serif;
color:#f1af15;
font-weight:bold;
margin-top:2px;
}

#date .m {
text-align:center;
font:11px bolder Verdana, Arial, Helvetica, sans-serif;
font-weight:bold;
color:#fff;
margin-top:-3px;
}

#date .j {
text-align:center;
font:22px bolder Verdana, Arial, Helvetica, sans-serif;
color:#f1af15;
font-weight:bold;
margin-top:-2px;
}

/*-------------Images------------------*/




/*-------------Other------------------*/
.sidebox-group {
width:120px;
padding:0 0px 10px;
}
* html .sidebox-group {
width: 120px;
padding-bottom:0;
}

.sidebox {
margin-right:10px;
padding:0px;
border:none;
clear: both;
float:left;
}

/* handles */
.sidebox-handle {
/*background:url(images/side_box_top.jpg) no-repeat;*/
height:15px;
color:#802100;
font-size: 12px;
font-weight:bold;
padding:5px 5px;
margin:0px;
width: 120px;
}
* html .sidebox-handle {
width: 120px;
}


/* inner content area */
.sidebox-content {
float:left;
width:119px;
padding:5px 5px 0px 5px;
margin-bottom:10px;
color:#265126;
overflow:hidden;
display:inline;
}

.sidebox-content a{
color:#334c51;
text-decoration:underline;
overflow:hidden;
}

.sidebox-content a:hover{
color:#892d00;
text-decoration:none;
overflow:hidden;
}

/*-------------SiteNav------------------*/
#sitenav {
width: 900px;
padding:0px 20px 10px 20px;
margin:0 auto;
background-color:#062104;
overflow:hidden;
}

#sitenav .title {
border-bottom:3px solid #666;
font-size:12px;
font-weight:bold;
padding:3px;
margin:0px;
color:#ffc600;
}

#sitenav .box {
font-size:11px;
width:200px;
float:left;
padding:0px;
margin:10px 10px 10px 10px;
}

#sitenav .box ul {
padding:5px 0px 0px 20px;
margin:0px;
}

#sitenav .box li {
list-style-type:square;
padding:3px 0px 3px 0px;
border-bottom:1px dashed #666;
margin:0px;
color:#666;
}

#sitenav .box li a{
color:#fffef5;
text-decoration:none;
}

#sitenav .box li a:hover{
color:#fff;
text-decoration:underline;
}

#sitenav .box2 {
font-size:11px;
width:400px;
float:left;
padding:0px;
margin:10px;
}

#sitenav .box2 ul {
padding:5px 0px 0px 20px;
margin:0px;
}

#sitenav .box2 li {
list-style-type:square;
padding:3px 0px 3px 0px;
border-bottom:1px dashed #666;
margin:0px;
color:#666;
}

#sitenav .box2 li a{
color:#fffef5;
text-decoration:none;
}

#sitenav .box2 li a:hover{
color:#fff;
text-decoration:underline;
}
/*-----------END--------------*/

I hope you all feel free to help me....

 

Please post your website URL and maybe supply a little screenshot/diagram showing which font size and color you want changed.

This is a very small job.