1: Download Teamspeak 3 from their website.
2: Go to the bookmarks tab in Teamspeak
3: Manage bookmarks.
4: Add Bookmark (top right)
5: Label, (Fenix Teamspeak) or whatever you want to put there.
6: Address, 198.15.70.250:20040
7: Nickname, Your ingame name
8: Server Password, fenix
9: Click ok
10: Bookmarks tab again
11: Click on "Fenix Teamspeak"
12: From there, it's mostly a learning curve on how to use teamspeak.
Hopefully that's what you were referring to? Cause honestly we don't have a wiki for teamspeak. xD