If you're wanting to get into rowing, you need to figure out what kind of rowing you want to do. If you want to scull (2 oars in your hand), you can do that on your own, but you may need to take lessons. You have to have good balance and understand how to use your oars to balance on the water.
If you're rowing with a partner, you have the option of sweep-style rowing. (each rower with 1 oar) The type of boat for this is called a pair.
I suggest checking to see if there are any rowing clubs in your area. They have one here with modest yearly dues of $100 for use of club equipment and I'm sure you could get help learning. Be sure to spend some time on an ERG or rowing machine to work on technique before you ever hit the water.
You'll want to learn how to properly feather your blades, learn about avoiding crabs (getting your blade turned backwards in the water), and definitely about body rhythm up the slide to keep the boat in a forward motion rather than jerking it back every stroke. Rowing will take you about 6 months to get the techniques down and probably a few years to perfect. I rowed for 3 years and used to compete against all the schools down south. (UNC, DUKE, UCF, GT, UT)