A link to a good disc golf glossary is provided below. Some of the terms and concepts you will want to familiarize yourself with fairly quickly include: hyzer, anhyzer(anny), hyzer-flip,turn, turn-over,fade,stable, overstable,understable, fade,falling-putt, &, RHBH,LHBH,RHFH,LHFH.
You will also want to familiarize yourself with the terminology used to describe the flight-rating of a disc. The most common system used to describe the flight rating of a disc involves the use of four numbers. Some disc companies...including Innova (the largest) will often stamp these four numbers directly on the disc. For companies that don't use this system.....or don't stamp the numbers on the disc.....these numbers can often be found on the websites of the disc companies...or websites of various online retailers for golf discs.
For example, a disc might have the following flight rating numbers: 8/4/-1/2. The 8 stands for the speed of the disc. (speed 6 and above is considered a driver....1-3 a putter....4-5 a mid-range) The 4 indicates the degree of glide of the disc...its tendency to stay in the air.(higher numbers=more glide) The -1 indicates the degree of turn the disc has...its tendency to go right for a RHBH player( an understable disc will have more turn than an overstable disc). A -2 indicates more turn than a -1, etc. Finally, the 2 indicates the degree of fade the disc has at the end of its flight path.....for a RHBH player the disc will fade left.....(higher number=more fade).
For example: A disc rated 9/5/0/3...is an overstable driver.
A disc rated 5/4/-3/1 is an understable mid-range disc.