Ohithere!
Well, you can join as a loner or a pack character, though as of right now we have a tonnage of loners and some of the packs would need more members.
If your character is at least a quarter coyote, you can join Inferni, but if your character is a wolf, s/he should go to one of the other packs. ^^
When you join, you can join OOC or IC. When you join OOC, you fill out an application and someone will post an acceptance message for you. When you join IC, you write your character coming to the lands, someone replies, and you go from there. ;3
Either way you decide to join, to start yourself off, I would fill out some of your profile and get your ideas as far as your character goes settled down a bit. Get some stuff down about his/her appearance, personality, etc. I find it's useful to have at least a little bit jotted down before I dive into playing a character.
Some people find it more useful to write a skeletal profile with the barest of information, and develop the character as they go, while others prefer to write down all of their details at once and play the character based on what they've already got down in the profile. :3
Hope that helps?