theres two main builds, wex/quas which is more of a disabler build and exort/quas which is more damage orientated. wex/quas is probably easiest for a beginner.
max wex and put off-points into quas. your main spells are tornado, emp and cold-snap. use tornado/emp combo to start teamfights and cold-snap to stun important targets.
get 4 points each in exort and quas for double forge spirits, then max exort. i suggest maxing wex afterwards as you never really need more than 4 levels in quas. Use sunstrikes whenever you can, if you can't hit moving targets, hitting a stunned target during a gank still really helps. use cold-snap like the previous build. your forge spirits will deal large damage at large range, especially when you have 2 of them.
It's also important to remember to use ghost walk (QQW) to go invisible to escape whenever you're about to die. I suggest getting one point in Q and W whatever build you go so you can use this skill