Considering Master Swim, but first I need some advice

While lamenting that fact that running and my knees just don't get along like they used to, my sister suggested Master Swim. So I quickly found plenty of activity here in Dallas, but here's the problem. I'd characterize myself as a "former strong" swimmer. Red Cross Life Guard certified as a kid, which helped me survive water survival in Pensacola. Problem is I never swam competitively, or for fitness. Really all of my water training is survival based with the Navy verses fitness. I'd really like to learn proper technique for lap training, kick turns, breathing proper breathing etc. Can this organization help me find a coach? Should I join a local club first? Thanks in advance for any advice. Dan in Dallas...