Newbie trying to use Walker

Does anyone have any experience with the Walker iPhone app? I'm inexperienced at GTD but I'm making an attempt. Walker appears (and claims) to be based in the GTD concepts, but I'm having some trouble getting things from the inbox to the right places inside the nested lists. This is a fairly new app, and documentation is scarce, at least that I can find. Any help is appreciated. Thanks!

I looked at it when it first came out. While it attempts to faithfully model GTD processes, it's not really a first-rate app. I'd look elsewhere if you're starting out. Search for gtd in the App Store and look at apps with 4 stars or better.