Right, first of all go buy a full set of Recruit gear, and buy 2 champion relics (11k each) then go on the GTM and buy 2 columni implants (40k each on my server, not sure about yours) and if you so wish buy a few 50 PvE epics. At this point you should be able to easily pull your weight in a Warzone, if not then, maybe you're doing something wrong. Also maybe go and spec tank until you have better gear (focus is very gear reliant) use your taunts, guard your ball carrier/healers, force push, awe etc. This is probably the best advice I can give you.