New player, bored of RF Totem at level 45..

Absolutely loving PoE so far, but I'm bored of the build I picked. Is it too late to reroll? Any advice on the best way to swap builds?

Edit: Looks like I'm rerolling. Any non-summoning type builds that are a good budget starter build? Long time D2 player and mostly enjoyed WW Barb, Frozen Orb, and anything Amazon.

Edit 2: What the heck do I do with all the gems I saved? Vendor them?