inventory help

I was at the point where I was learning to do inventories and I must say im lost. Most of the examples i found on blenderartist wont work on the latest blender I have and most of the youtube stuff is video of working examples, not tutorials, and lots of the blend downloads were broken. I was wondering if i ould get any direction on an inventory(backpack style) for 2.62.

Ant tutorials or anything small is great. I just couldnt find much useful with my search here or youtube.

Thanks in advance