Giant Guardian Generation--Rules Clarification?

[Amaril]

So I just picked up Giant Guardian Generation, and it seems to have everything I've been looking for in a mecha system for I've lost track of how long. I'm pretty new to the art of GMing, but I've already decided I want to run a game of it. To help me learn the rules (well, mostly just 'cause it's fun, but also that), I've been playing around and creating some mecha, and I've run into some rules that confuse me--the ones for the Frames and Transformation upgrades. The cost and effect rules for these are written really badly, and I haven't been able to find any clarification for them anywhere with a Google search. Can anybody explain to me how these upgrades work?

Also, as an aside--while I'm still in the extremely early planning stages, is there anybody who might be interested in joining my campaign once I get it started? I can provide some more information about my idea if anybody asks.