if you are new and dont really got any1 to play with, i would sugest a guardian build like this
http://hellgate.ingame.de/skilltree/guardian/?l=50&s=02300114a9160000002007100110this build alows you to charge into enimes with 2 different charges ( mostly for make the time w8 shorter ) and then make shild turn so all get stuned, go into anchor mode and start rip them all, just in time when there stun is out you make shild turn again if they are still alive.
BUT, defence aura will for sure be decresed in next patch, atm it´s one of the greatest skills in hgl imo.
i dont suggest this build if you are planing to go along in a party, this build is very offensive but still defensiv.