For those new to PBS there is union-run forum called PrefBid, here, Welcome to PrefBid.com ? Index page. ("You must be logged in to view the forums. If this is your first time logging in, you will use your employee number as your password. After your first login, you must change your password on the user control panel.")

When PBS first started there was a lot of activity here as pilots posted questions and trainers answered. All this interaction is still archived to read through. The site is still maintained by a couple of the original PBS gurus.

There are also many downloadable instruction sheets and an "ABCs of PBS" pamphlet, http://www.prefbid.com/ABCs/ABCs_20.pdf. It's outdated but useful for a general overview. This link may work without logging in.

During the bidding window there are live trainers available to chat online. See flashing icon at the bottom of page.

PS. This is not a forum to complain about PBS, although many have tried. It's a place to get answers about using PBS.