The way iTunes syncs pictures is like this-
When on your computer you make a folder in Pictures, let us call it “Baby Birthday Party”. When you open iTunes it will look where you tell it and see a folder called “Baby Birthday Party”. If you check off that this is one of the folders you wish to sync it will then sync all pictures from within that folder to your iPad2.
Remember, if you ever make any changes to that folder on your computer the next time you sync your iPad2 it will copy over whatever changes you made. (Ex would be: You originally had a picture titled Baby 01, in the "Baby Birthday Party" folder. If you delete that picture from the folder on your computer, the next time you sync your iPad2, iTunes will also delete it from your iPad2.
Now here is an annoying part. iTunes cannot distinguish sub-folders. (There may be an app that can do it, but iTunes cannot). So if you have a folder called "Baby Pictures” and then inside that folder you have Baby Birthday Party, Baby Shower, Baby At The Beach, iTunes will lump all of the pictures into a folder called “Baby Pictures”
There is an iPad for dummies book which can be found at Amazon (here is the linky)
Amazon.com: iPad 2 For Dummies (9781118176795): Edward C. Baig, Bob LeVitus: Books
In addition, Apple has the iPad User Guide which you can download into iBooks. If you want to view the manual on your computer here is the link-
Hope this helped a bit.