never used a para and get trough it really fast, not my prof.
ritualist and elementalst is just simply the fastest way to get trough everything, they both have high damage and they both have some support.
breezing trough the game can be done by just making a faction character so lvl 20 is reached really fast, getting to nightfall is best done trough proph so better travel to proph first before going to nightfall.
just a tip from a non-farmer: focus on the whole armor set first, taking one piece at a time makes things messy and you're quickly making a mistake like buying the wrong piece. (just imagine buying the chest and gloves only to buy the chest again, it's a waste of time and only becomes more frustrating)
don't spend your gold to much on materials, you can get them from armor the enemies drop, just salvage them with an expert salvage kid and it makes making armor much easier.