Eastside and Phoenix are a great place to start. Both are indoors CQB Fields, and both will have rentals available. A big plus too, is these fields are usually walk-on rec games, so they're a great place to start. While outdoor fields and CQB fields have very a very different feel in terms of the activity, CQB is fast and there is a ton of action, for newcomers should be a great experience. Both Eastside and Phoenix have decent turnouts on Fridays and Saturdays, so you'll have plenty of opportunity to mingle with other players. Both fields also have gear shops so you'll get a change to see and touch some gear, which will help you with your future purchasing decisions.
Action in Taylor is one of my favorite outdoor fields, I wish they'd hold more events. I'm very thankful to Pagan and his crew for putting on those events. The nice thing is that the turnout there has been huge, the last few times I attended in 2015, the crowd swelled to near 100 players.
My advice: Get out and play some CQB before spring starts and the outdoor fields get humming again. Hopefully by then you'll be hooked and packing your own gear for the fair weather months!
Welcome!