So I took the plunge & jailbroke my iPhone. Now I got a new icon installer on the screen. I have read so much over the past few weeks my head is spinning trying to get it straight. So could someone please tell me what steps to take now that it's jailbroken. Heres what I have now.

O.O.B 1.1.2 upgraded to 1.1.3 then jailbroke using ZiPhone 2.2. My main purpose of jailbreak is customized themes, icons, add games, So where do I go from here?

P.S. I also noticed on the installer it shows v3.0 & said something to the fact not to upgrade to 1.1.3 through iTunes. I did before jailbreaking. Do I need to do anything or is it ok this way?