For training, look into Barbara Heidenreich.
www.goodbirdinc.com. Many people speak highly about her methods.
What I sometimes do for a quick foraging toy, is throw a nut in a brown paper sack, crumble it and let them have at it. It takes them a while to get the concept down, but once they do, they will hunt thru anything you put in their cage, just incase there is a new treat for them. For the ones new to this game, I will put the nut/treat into the bag in front of them so they can know it's in there. This will strike an interest for them to approach the game. For the more mechanically inclined toos, I will put a peanut into a clean, empty 20oz plastic soda bottle, and tighten the top as hard as possible. Some birds will open it in a heartbeat, and some will take a while.
On the Womach's. I had junkmail from them for over a yr when I downloaded their free video. I've never seen any of the videos they sell, I've only heard other peoples opinion.