LOL ok well! The most basic thing is that you will want a driver, midrange, and a putter. I recommend Innova... but that's because I'm pretty much obsessed with Innova. I would suggest starting out at Play It Again because you can usually find some good deals there. You can buy starter packs which will come with all three types of discs, generally costing anywhere from $15-$25. Otherwise, I would suggest "older style" discs to start with, as they are cheaper and will get the job done as a good starting place. In all honesty, its kind of impossible for me to suggest a specific disc until you start playing and I see how you throw, however I will suggest a few that I think are good starter discs, and I will also show examples of older style discs vs newer style ones so you know what to look for when you go looking on your own.
For those of you who are a little more brave, I'll explain disc number ratings, which at most Play It Again's should be pretty easy to find. For Innova (a 4 number rating), it should be posted on a sign near the discs at Play It again; for Discraft discs you will find a single number rating right on the disc.
Innova rates their discs with 4 different numbers: Speed, Glide, Turn (how much the disc goes to the right before fading back), and Fade (how much the disc will go left as it falls). Innova's speeds go up to speed 13, obviously the higher speed #, the faster the disc will go. A good starting speed would be around 9. Glide is the rating used to show how long the disc will be able to stay up in the air during flight and is shown on a scale up to 7... discs with higher Glide ratings are better for beginners. Turn, as I said before, is the discs tendency to go right before fading off. It is rated on a scale of both negative and positive numbers. Discs with positive turn ratings will resist turning right more (essentially fly "straighter" longer) than negative number discs. I would suggest discs that fly straighter for beginners, as it will lead to less frustration, or at leas that's the hope. Lastly, Fade is the amount a disc will hook to the left at the end of its flight, which all discs do. They are rated on a 0-5 number system with a disc rated 0 ending its flight the straightest and 5 hooking to the left the most.
Discraft, on the other hand, has a single number rating that is usually right on the disc. This rating measures the disc's stability on a -3 to +3 rating. On the negative end of the spectrum are understable discs. Understable is the word used for discs turning more right, and are usually easier to control, better for beginners. On the positive end of the spectrum are the overstable discs. Overstable is the word used for discs that turn more left. These discs are generally much more difficult to control and I wouldn't recommend them for beginners. Discraft.com suggests beginners choose discs with ratings at or below 1.0.
Another thing to take into account is the weight of the disc, which you will find on the disc, usually written in pen or marker on the back of the disc. The weight is measured in grams, and heavier discs tend to be more overstable than their lighter versions. It is generally suggested that beginners use weights in the higher 160's... I started with 168's mostly and they worked great for me.
The last thing I'll mention is the different kind of plastics. Its a little harder for me to explain, so here is a link from Innovadiscgolf.com that explains their different kinds of plastics:
http://www.innovadiscs.com/faq/plastictype.html
So now I'll show you some examples of older style vs newer style discs...
Here are some older style discs:
Innova:
http://gottagogottathrow.com/discgolf/beast-dx-pi-28.html
Discraft:
http://gottagogottathrow.com/discgolf/avenger-ss-d-pi-1888.html
Here are some newer style discs:
Innova:
http://gottagogottathrow.com/discgolf/beast-champion-pi-30.html
Discraft:
http://gottagogottathrow.com/discgolf/avenger-esp-pi-730.html
Older discs will be (usually) duller in color and cheaper. Innova's will have a picture on them, while newer ones usually won't. Newer Innovas will have brighter and more vibrant colors, as well as tye dye. The same pretty much goes for Discraft. Biggest indicator is the price though.
SO.... for all of you who weren't brave and skipped my novel... I would suggest...
Drivers: Innova Leapord, Discraft Wildcat, Innova Sidewinder, Discraft Xpress (which is actually sort of driver/midrage hybrid), Innova Valkyrie
Midrange: Discraft Breeze, Discraft Xpress, Innova Skeeter
Putter: Discraft Magnet, Discraft Challenger, Innova Birdie, Innova Aviar
Let me know if you have anymore questions!!