The very first sailboat I had was something I resurrected with my stepfather. He was a master house painter and one of his clients had a homemade wooden Sailfish type boat (which is pictured) and offered it to him. He brought it home! I was 13 or so. and pysched!
This boat needed some work, so we fiber glassed the whole thing and painted it white with green nautical markings. We found rigging for $100 used. As soon as I could I went out sailing in it. It was very heavy, so I kept it on a mooring near shore. I loved that boat. It sailed very fast! It was my best friend for the next few years!
Starting out you may want to consider one of these or a Sunfish which has a small cockpit. You can transport them on your car if you don't have a trailer and they are very easy to rig.
Here is a link to a place that sells Sunfish sailboats. Do a search for either and you will find used ones for sail.
In the meantime, start learning the parts of a sailboat!