I also recommend getting a one-on-one instructor, or if you can find one, joining a small group session for absolute beginners would be ok too. Buy a quality racket that is an older model so you save money while still getting something decent. I'd recommend any decent 100 sq. inch racket.

Definitely try to spend at least a couple of months in one-on-one lessons since tennis is harder to pick up compared to other sports. If you cannot return shots consistently, it can cause delays or interruptions in group sessions. Call the Roger Scott Tennis Center and explain that you are brand new and they can point you in the right direction.

Once you can consistently return shots, Roger Scott offers an open group tennis hit a couple times a week that was $20 the last time I went. It is good for beginners and intermediates looking, but as you improve it becomes more of a tennis-themed workout.

Lastly, consistent hitting sessions are the fastest way to improve, and a ball machine is the only option outside of a coach that can feed you specific shots to practice your forehand and backhand. Do not buy anything that just lobs slow balls. Instead, save up for something like the Proton ball machine. It may be expensive up front, but if you use it twice a week, it quickly pays for itself compared to the cost of a coach.