I like revolvers, especially some of the S&W designs from the 30's and 40's.
However, semi-automatic pistols have eclipsed revolvers because they are much easier to shoot. Never mind capacity; that's just a bonus. The learning curve is much lower with semi-autos and people like to see results quickly.
If you have no idea what to buy, get a handgun chambered in 9x19mm. Get a service grade gun from Glock, S&W, HK, Ruger, and so forth. Avoid small guns; the gun should fill your hand and have at least a 4" barrel. This is necessary for learning. Good gun combinations include the Glock 17 or 19 and Glock 26 and S&W M&P 9 and M&P 9C. HK and Ruger have similar offerings.