Depends how long u been away, billing cycle now is every 30days & not set days of month, so u not gotta worry about day u starting back any more, like before (yr+ ago) u could've played a few days before billing cycle & got billing a full month(happened to me a few times in past), which is a bonus.
Main website for info of new stuff is this for gear/crafting &
http://wiki.bluegartr.com/bg/Main_Page for new content/events etc, old wiki is not updated much anymore. read up on update notes since you went can give you a idea of what sort of stuff in game now & what your interest could be in.