If you'd like to increase your PageRank, you need to have "back-links," or other people linking to your website. You can trade links with other people, but make sure you only trade relevant links, and make sure you're not trading links with a link farm. You can register your website with directories, such as the Open Directory Project, but use directories with high PageRank whenever possible.

As you build web pages within your website, you can create some of your own back-links by linking to relevant pages within your own website.
The best way to increase your PageRank is to have quality content that other people want to read more