Hi,
Just got the game and expansion. Looking for an updated guide/build for new player.
Thanks.
Not sure on guides but imo the easiest/fastest way to level is 2h transmuted forcewave.
You rush to forcewave, then max out forcewave skill. Rush to the transmute and take it. Then rush to the next part of forcewave and max it (at work can’t remember the name)
Then you rush to squad tactics and max it. Then you can decide to either finish filling on what you want in soldier class or start working on your second mastery. Either is good as this set up will carry you through ultimate act 4 pretty easily as long as you upgrade your weapon every 8 - 10 levels
Welcome to the game and to the forum. 
There are some beginner guides in the compendium which should be okay to play with.