If you can, meet up with someone and fly theirs. They will have a few different ones, it's a disease...
If you can't meet someone, put the call out for a second hand one. You'll need lines and handles. A "standard (or full) sail" is usually the first one purchased.
If you can't get a second hand one, get a nice and crisp new one! Get a RTF (ready to fly) package with lines and handles. Some packages have a second frame too.
Most start on a full sail. That is a sail that has no venting material. Good for about 8km/h to about 25ish. If you have the means, get a B series as the package comes with a second frame. If your budget is a bit limited, the EXP package is still great. I still have my EXP!
Compare dealers. Ask them questions. Get to know them. You will end up on a "first name basis"...
Sent from my iPhone using Tapatalk