Just follow the the steps below to limit the number of posts for your wordpress.
1. Access your admin site & Click Settings.
2. Then Click Reading Menu
3. Set the Reading Settings as you want. Set the following parameter.
- Front page displays : Your latest posts Or A static page (select below)
- Blog pages show at most : ___ number of posts
- Syndication feeds show the most recent : ___ number of posts
- For each article in a feed, show: Full text Or Summary
- Encoding for pages and feeds : No need to change the setting. Use UTF-8 as recommended
4. That all and you're done. By limiting the number of posts, your website loads faster.
