Hey Steve and Welcome to TFP!
A good test kit is the BEST investment we made in our pool. The most recommended is Dave's (duraleigh) TF Test kit. He has a link on the Homepage and he is always around here to answer any questions we have!
Being able to test your own pool and using BBB will save you tons of $$$. And the sense of 'control' you have over your water and chems is priceless