A note on Polarizers- there are 2 types, linear and circular. Linear are the original kind, and polarize light waves in a linear fashion as they pass through the filter. When autofocus cameras came about, the earlier AF line sensors would get screwed up when using them so the circular ones came about, and they polarize light waves in a cork screw sort of way, not interfering with the line sensors. Now after a good 20 years of development in AF sensors, they really won't be messed up by Linear polarizers. The thing is, the circular ones are being pushed way more- and they are way more expensive. So if you get one, which I highly recommend you do, get a Linear. They polarize light much more effectively, won't screw with your Af system, and cost 3 times less.
Since you have the kit lens, consider getting low profile filters- ones with the slim rings as you will run into vingetting if you use more than one filter at the widest focal length.
Also one more thing- Anything over 50mm is consider telephoto. 45-50mm approximates the same field of vision that one eyeball sees, and therefore anything above is telephoto, anything below 45 is wide angle.