I recently came back to the game and plan on casually leveling my lvl 21 necro up casually, likely solo. It's been a while and I have forgotten what little I knew long ago. What dots/nukes should I be using or avoiding the usage of in the 20-40 range? I guess what I am asking is, are there "useless" damage spells that I shouldn't bother putting on my bar? Also, should I use my max rank of darkness snare for the added dps, or is there a low level version that folks prefer? Is pet tanking viable in lower levels or should I opt to kite/fear kite?