how can i get games in ppssp

[Bigpet]

Look at the FAQ it's right there:

Quote:Where can I get games for PPSSPP?
To legally turn your PSP games into .ISO files, you need to install "Custom Firmware" on your PSP. Google for that. Then follow these steps:

• Insert the UMD into your PSP
• Connect your PSP to your PC with a USB cable.
• At the PSP menu, press Select. In the menu that pops up (only on Custom Firmware), choose to UMD as USB Device.
• Still in the PSP menu, choose USB Connection in the Settings menu (to the left).
• On your PC, a folder will pop up, containing a virtual ISO file. To copy the game to your PC, simply drag this to somewhere on your harddrive and the copy will start. Done!
  

There are also tools to turn ISO files into CSO (compressed ISO) files to save space.

If you have digital downloads on your PSP, they can be used directly on PPSSPP. Just copy the EBOOT.PBP over. Note that this has not been tested as much as ISO loading so there may still be issues with some games.