I've learned enough from this group to know there's always an uncomfortable topic that I won't find the answer to with the search function, and I'll have to ask.
I recommend you read topics of interest in the SOHC4 Bikes section and the project shop, lots of stuff is general to most bikes, but when you find something about a 650 pay attention because there are specific things to each model as well. You'll find a certain camaraderie with other 650 owners too.