If you've got a decent pool company around, hiring someone to show you would be a GREAT idea. It's really hard to 'get it' all at once, especially when you have a number of service issues to resolve. (It sounds like some many be minor, but confusing.)

Also, I wouldn't drain and refill till you've worked out your equipment issues -- it's better to experiment with your existing water, and then (if you drain) keep your new water pristine.

Ben