Reminder: You can DOWNLOAD PS4 & PS2 games from PlayStation Now, in addition to streaming them. I keep seeing a lot of people who missed this announcement. : r/PS4
How to Fix Game Install Issues on a PlayStation 3 - Support.com TechSolutions
Can you play PS3 games on PS4? PlayStation 4 backwards compatibility explained
How to Fix Game Install Issues on a PlayStation 3 - Support.com TechSolutions
How to Play PS3 Games on a PS4 With PlayStation Now
With PS3 support gone, meet the group preserving its online games - The Washington Post