Beginning Flying Questions

Is there a FAQ that covers all beginning questions?

I need one answer that will require someone just being honest with me.
I am 6 foot and weigh about 260 pounds. I play raquetball and tennis
weekly and coach two softball teams so I am not worried about the
physical aspects but wonder if a cessna 172 trainer will be to tight to
be comfortable in. Are there other 45 year old guys who are overweight
who fly? If the answer is you are too cubby to fly I totally
understand.

Also, what is the first step? How do I find a good flight school that I
can trust if I know no other pilots? What if the local school at the
olathe kansas airport are bad and I don;t know enough to know it.

Thanks for any help!!