In your question you do not provide details, what make you think your website is slow? Depending on this there are different solutions. Here are general tips: http://developer.yahoo.com/performance/rules.html
If you're using PHP, check into APC (alternate PHP cache) if you control your servers. If you are on shared hosting, tell them to use APC or switch hosts. You can also look at yslow if you're looking @ load times http://developer.yahoo.com/yslow/
Caching won't always help if this is a network related issue. Also caching solutions won't work with suPHP so if your host is using this, good luck getting them to change. Waiting for TS to reply to know what kind of issue this is. TS can you also let us know what the load is on this particular server?
Yslow as mentioned above is one of the best tool that will help you speed up your site. try to minify all css and js files and to smush all images. You will definitely see a lot of difference after doing this things
Yslow is only client-side optimization, it is good, but we don't know anything about the project. What if on server side there is something like: $query1 = 'select * from table1'; while($var = fetch($query1)) { $query2 = sprintf('select * from table2 where field = %d',$var); while($var2 = fetch($query2)) { $query3 = ....... } } PHP: instead of join, in this case the site will never be fast no matter how good client optimization is. If I were the author, I'd start with DB optimization (slow_query_log in case of mysql), analyzing the most slow queries, rewriting queries, denormalizing tables if necessary. Second step is optimizing the algorithms, i.e. removing pieces of code like I posted above etc. And the final step is client optimization. Since it is impossible (and topicstarter woldn't do this) to post here full source code, I'd advise him to ask/hire someone for this task
If it's site specific, as opposed to a general question of best practice, you should post a website review request in the reviews subforum.
Use Cache and use echo instead of print function in php like wise So just give your url let me have a look to solve http://lmgtfy.co.cc/?q=Tips+to+load+website+faster