When you need help on SEO it is better to say what do you need to be done and what are your objectives. I would suggest you either to place this here or to contact someone who works as SEO consultant. YOu'd need to spend some money n SEo anyway.
First you should start off with Stymiee's SEO Faq over at Sitepoint. Then continue with reading at Dan Schulz's Wordpress SEO Checklist. These two resources should help you get the ball rolling in the right direction.
Im using blogger blog so cant edit any css files, n where can i use meta tags? There i get an only option of editing theme template
Hi, I would suggest you to read some books related to SEO because questions you are asking doesnt make any sense. We dont know what exactly you want to know. Few months ago I was also in same situation and decided to read some books and today my website is on the first page of google and yahoo. You need to do some home work before you go ahead. Thanks,