The VOIDRUNNER'S CODEX is coming! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
As for your first question, in the upper right of the first post on each page, you should see a drop-down menu titled thread tools. One of the options is Subscribe to this thread.
Subscriptions do work, but e-mail notification is turn off, as Berandor has said.
You can still track subscribed threads via your user CP (the My Account link on the old styles, and My Account->My User Control Panel on the new ones).