Hi Brian,
welcome to the site! Everyone here is so friendly and welcoming, I'm sure you'll find your feet in no time.
On the issue of uploading extracts of novels, everyone is different, but most of us do it. I'd say anywhere up to around 3000 (maybe 2500) words at a time is acceptable, any more than that and you risk really reducing the amount of feedback you receive on an upload. Remember to make sure you only make your work available to ww members rather than 'everyone' when uploading to avoid any future problems with rights etc, and you should be all set. (Oh- and when you do upload, if you aren't a member of a group- post something in the introduce your work forum for people to see so that you can at least get some feedback, but really, a group is the best way to do it
)
As for the lounge, I may be wrong, but I don't think it's accessable to temporary members, sorry.
Welcome again. See you around the forums.
Saz
xx