I would just let a pro do it. You might be able to do the sides, but the back window will be a pain. A good tinter will do the back window in one piece, over the dot matrix if present, with no problem. Also, removing tint from the back window might cause damage to the defroster lines, so a good lifetime job is better way to go.

If you do attempt it, at least goto a tint shop and buy some quality tint from them. The film they would use for a "lifetime" tint job.