Welcome, for an official introduction thread check
this out. It sure could use some dusting. We also have discussion about Slingers in
this subforum. Never know, might learn something or perhaps share tips and tricks we have missed. There are subforums for every class, even if some are missing/outdated (there has been no discussion about Shadows since February).
Generally for advice I suggest these people:
Gunslingler - Goopy (Anglefluttershy, the GM)
Shadow (tank) - Princessluna (CrazyBE) or Nezalia (Ken'shi)
but there are others in the guild.
And for ops schedule head to swtorponies.enjin.com, set up an account (I believe you already have) and sign up.