Yep - that's the good stuff, baby
It will help give you an idea of how to do things - some better perspectives, light, etc.
But, it isn't model-specific. For that, you'll either want to find a local photography class (ha, in wv?) or just trial and error and read your manual
The powershot (which I didn't realize you had when you were doing ring pics or I'd have helped more

) has a little flower icon on it, yes? On the dial? That's macro mode
