This is a convenient list to view: Mike Kohl's List. You won't necessarily be able to receive every satellite on this, but you could probably receive most of them. $? As low as free (find somebody who doesn't want their equipment anymore) to $200 (buy new) to many hundreds or thousands of $. Like most things now, you can pick a budget and work to that.
I'm more remote than you (so I'm on the edge of some satellite footprints), but I would get a 1.2-metre dish instead of the 1-metre dish I bought if I did it again. Buy one size larger than you think you need.
90CM will do you well through the united states and check out the satllite guys ads section and you might find good used equipment and buy a motor to pick up more satellites for better viewing. you can pickup a HD FTA Box now for under $200.00
I started with a free DirecPC that my brother gave me but if you can find an old PrimeStar dish or an old HughsNet dish those also work for KU band Free To Air reception. I agree with others on dish size 80 or 90cm is really minimum size to start. Also, I would recommend a fixed dish to start - - - by this I mean pick a KU satellite that has stuff you would like and setup a fix dish on this satellite to begin. This does several things; it helps you get familiar with your receiver and also you learn about pointing a dish correctly.
As to receiver, I would read the review section here as many excellent reviews are listed. It might be important to point out that a blind scan receiver really helps you when you are new (many receivers offer blind scan) and a complex (many bells and whistles) receiver might not be best if you are brand new to Free To Air. Because of this, some folks start with a used Standard Definition receiver and then move up to a new one once they learn the basics.
Much help here - - - and many true experts (no me). Just ask.
Oh - - - Welcome to our forum - - - we hope you enjoy!