Down here in the SF Bay Area there are many, many solar contractors to choose from. Even Home Depot is in on the act.
There are also companies that will install the system free and charge you 'rent' (so to speak). Not sure I'd go that route for a grid tied system.

Grid-tie is nice- no batteries to fuss with, for one thing.
The only drawback is that if the grid goes down, your power goes down with it. There are hybrid systems, though, that switch you onto a backup source when the grid goes down (those pesky batteries that were just mentioned).

Sorry I can't find some of the links to good articles and blog posts about personal experiences with home solar. I had several saved up from when I was doing this sort of research a couple years ago. Oh well- If I found them, then certainly anyone else could as well.

The nice thing about researching home solar is that the early adopters are often the type of geek who monitors and publishes everything about their system, so you should be able to gather heaps of info. Good luck!