Welcome to the Stronghold!
For finding pictures of other members' armies, the best place to check is the Gnoblogs section (you can even check mine, with the link underneath my avatar on the left! It's not the best or most exciting, but hey, it's mine lol). You can also select the "Gallery" link above the title near the top of the screen, but that section is from a LONG time ago with a lot of nice pics from old forumites.
As for books with the lore, I have no idea lol... I just have both editions of the Ogre Kingdoms army book, and the first edition had a lot of great fluff in it. As for Black Library books, I don't think they really have any that have any major focus on Ogres; I think that any Ogres featured in them are a sidepiece at best.
...Granted, I guess it would be fitting for Ogres not to have any books of lore, since their lore comes mostly from oral tradition

38 Gnobs! Almost on my 4th Pack of Trappers! Exciting
Gibblet, Nibblet, Crunchybit, Snorti, Lullzee, Wakezee, Wardler, and Primo! (For sharing the Forum Primer to help out a new member! )
New book WLD: 21/11/3 - Got trounced by one of the "Khaine" elf armies... Stupid new rules...