Yes you can save games and you can download games from the PlayStation Store and store them on the PS3 harddrive
click save
Yes, but the amount of games depends how many gigabytes your ps3 has.
yes all of ps3 games are in blu-ray
Yes and No depending what ps3 model you have! If it has 2 usb ports it can only play ps1 games. If you have the ps3 slim it can't play any ps2 games no matter how many GB it has. Any ps3 can play ps1 games! ps1 and ps2 games can be saved on to the ps3 As long as you have the memory card adapter. You can only save ps2 games on the 20gb and 60gb and 80gb which have 4 usb ports! You can save ps1 games on any ps3 even on the slim.
You can still use it only the games and PS3 will not be able to get online updates and you will of course not be able to play Online games
PS3 is not a PC
Hard drive.
No you will not be able to play the games either way. Systems changes on the PS4 allow them more design capability for games and many titles will be released in a downgraded PS3 version. You still will have to have a PS4 to play PS4 games and a PS3 to play PS3 games.
Besides not being able to read the Blu-Ray PS3 game discs the PS2 lacks both the hardware and software to be able to play PS3 games.
The ps3 slim is a little bit smaller but you can have a mermory card in it the bigger one and i think it can save a lot more energy but all the games you save on autosaves
No
yer very supid mate i could do that the minutie i had it next your ask if ps3 has psn