Well i had planned to give ya the link for the OOTP 11 manual but that seems to not be working right now.
Why dont you start with something you are familiar with.
Theres logos and uniforms for the Australian Baseball League on Padresfan.
OOTP FaceGen Files
Under International
Why dont you create the ABL?
I have it as part of my 25 League Universe and although I am not a GM in that league I trade for players in it often.
Otherwise i would suggest a simple MAL setup with 3 levels of minors...and then you can search on here for various caps/logos/uniforms along with on Padresfan.
Or see if someone has a simple quickstart for 12.
if you use the search feature on here there might be a QS for the ABL or tips on creating an accurate schedule for it.
What would you say your level of baseball knowledge is?
I would put mine in the top 98% of all people on this board and even i let the AI deal with my minors. I do roster moves, trades,signings, drafts for the ML level only for most of my leagues, mostly because 90% of the time the AI does it right, also because I like to concentrate on just the level i am at.
Another option is start a simple 8 team fictional League with just a AAA a 5 round draft a 120 game schedule and start off as MGR only and let the AI GM deal with roster moves and drafting and such.