I am new as chosen and if U can answer on my few probably easy question i will be so happy

1) i have big problem with energy i lost it so fast in combat. Any ideas how to manage that?
2) schould i use whole "similar" skills like: Enraged Blow, Ravage, Cleave or use one from "main" talent tree?
3) chosen has 3 auras and there is info "only one can be used at time" but it looks like i can have all of them in same time or am i wrong?
4) i will be changing speces a lot to lear chosen but my idea is to be "tanky dps" so better idea is using 2h with additon of defensive skills or 1h + shield with offensive perks. IF U know what i mean

Thanks a lot for answers