its really easy...just go to the store, give them money, and take home a tripod. easy peasy.
Because there are camera stores on like every street corner these days! :lmao:
Seriously, though... the closest camera store is nearly a 2 hour round-trip for me and I'm sure that many other members are in the same boat. OP, like lambertpix said, figure out what you're looking for in a tripod, then focus on a few manufacturers known for making quality products, and start narrowing things down based on the criteria you come up with--there's a tripod model for pretty much every use case, you just have to define your use case. Make your decision based on research, not what people are telling you to buy.