Ok I went ahead with purchase with no expiration as I wanted t buy immediately at market price.
I've been trying to understand what (if anything) i need to do next. I've seen posts about having to message friedcat about purchases but I think that may be related to actual company shares and not PT shares, is that right?
Yes, afaik dividends will go to your btct.co account.
friedcat does only need to be informed, if direct shares change the owner.
(I've just recently bought one Share myself to test this ^^)