There's a new player's forum, I suggest you start there, and keep reading. We really don't walk you step by step through it all, but start simple, get two characters moving together, then try and kill something.

If you have high level characters already, I suggest you start 2 level 1's of your classes, and level to 10 just to get the mechanics worked out. If you're already starting two level ones, keep going. Keep it simple. You don't need to learn it all at once.

The only mod you need to worry about right now is Jamba.