RobertO . . . I won't repeat what others have already said, but it sounds like you are looking for a tractor to MOW the lawn with. If that is true, and since you are a newbie, I would strongly urge you to consider a tractor with a HYDROSTATIC transmission (HST). This is a hotly debated topic, but from the standpoint of ease of use, quicker learning curve, etc. a tractor with a hydro is easier and faster. Some folks without them swear you don't need them and that gears are "just as good" but then there are those of us who own BOTH types of tractors and find that we use the ones with the hydro a lot more often for many jobs.
A hydrostatic transmission is essentially an automatic transmission like you have on a car. Push one pedal and the tractor goes forward, push it harder and it goes faster, let up on it and it slows to a stop. Push another pedal and the tractor goes backwards. It is simple, fast, reliable and SAFE. For mowing, especially around trees, landscaping, etc it is a wonderful thing to have. All the major tractor brands have small & medium size tractors (usually up to 40+ hp) with hydro transmissions. Also, a mid mount mower on a mid-pto is ideal for mowing because it leaves the rear pto and the 3pt hitch free. For safety's sake, each pto should be able to be controlled seperately.
I might suggest you look at Kioti, NH, Deere, Kubota, Cub Cadet as places where you will find HST transmissions and tractors that have a mid-pto to operate a MMM.