How does this work? I don't have plus but will be getting it.
In download plus, do I keep the games forever? What happens if I cancel plus and delete the game afterwards? Can I re download it from my download history ?
You should be looking at the
PS+ FAQ on Sony's site, tbh. All those questions are answered pretty clearly.
The short of it however, is that once you get PS+, you can start downloading those freebies that are still ACTIVE. Most of these free titles are available only for a limited time. You can't sign up for PS+ in November and get access to the freebies that were offered back in July, for example.
If you cancel plus you will be unable to access those games you got for free with PS+. You'll be locked out of it. If you cancel PS+ and leave for a few months, then come back, you will have access to all those titles you downloaded while you were a member of PS+.