What are you needing tips with?
I wouldn't join a coven right away, especially Spellcasters, if you don't want to. If you're interested in covens, take some time to look through all of them. See what each coven offers, and talk to the priest/ess and members of the coven to get a feel for it.
To get you started around the site, scroll down to the bottom lefthand corner of this page. Under the "Help" section you'll find FAQs (Frequently Asked Questions), Newbie Central, and Tips (for spellcasting). Read through these to begin navigating around the site. It's also a good idea to read through the featured articles (simply click the Articles tab at the top of the page), and to read some of the stickied posts here in the forums.
Here's a great forum post to get you going:
Best of luck.