What are you wanting to learn?
The easiest way to get started around here is to scroll down to the bottom left hand corner of this page and look under the "help" section. There, you'll find FAQs (Frequently Asked Questions), Newbie Central, and Tips (for spellcasting). If you click the articles tab at the top of the page, you'll be taken to the featured articles, which I recommend you browse through. The forums themselves have a lot of information for you to soak in, providing you learn to utelize the search bar to find topics relative to your interests.
Many people suggest you learn "the basics", so here is a link which may help:
Best of luck.