Hi Gary,
Welcome to BeechTalk. You can get a lot of great information from the people on this board. Lots of experience beyond just Bonanzas.
I learned at KSNA (Orange County, CA), a Class C airport. I never waited for more than one plane for takeoff. Sometimes the pattern can get busy (5 or 6 planes in orbit) and that can be challenging, but it is also great practice for slow flight and precision turns. It also removed the fear of controlled airspace from me. I was talking to the tower after a few lessons and never looked back. The way I learned, that was normal.
As for buying: yeah, if you can swing it, a C172, Warrior or a Sundowner would be my choice. Simple machines to learn on. Get it down pat, then move up the ladder. There are some screamin' deals out there right now. On the other hand, I waited a few years after I got my PPL and then I bought my Debonair. I bought my second plane first and rented up until that time.
Renting is a great eye-opener. You get a good cross section of crappy planes so you can see what the reality of ownership would hold. My wife and I preferred the Warrior when we were renting, but that never stopped me from grabbing one of the 172's when I needed to make a trip.
Keep flying as regularly as you can while learning. At least twice each week, 3 times would be better. The more you fly, the faster you will get that PPL.
Keep us posted and feel free to ask lots of questions.
Good luck
