Yes, rainmeter is very in depth and there are a lot of options. However, I usually just edit skins that others have already made. It's easier this way, and it's also a way of slowly learning the code. Rainmeter is just great, the possibilities are endless.
You might also want to just download some of the more popular rainmeter skins from deviantart because some of the artists actually write explanations of all of the code in the skin itself.
I have found objectdock to be fairly easy to skin. Everything is pretty self explanatory, and it all comes down to trial and error. Once you get a feel for how the borders should be set up, it's easy from there. The original objectdock skins have explanations of code in the config files, so you can quickly catch on.
I think both of these programs are easy to skin, use, and enjoy, and therefore I typically run them both at the same time.
