Oh, dude, using Sokka's bomb in Avatar the Last Airbender for PSP is like, totally easy. You just gotta press the designated button to equip it, aim it at your enemies, and then press the attack button to throw it. It's like, boom, enemies defeated. Just don't blow yourself up in the process, okay?
Hold down O then hit ▲
In "Avatar: The Last Airbender" for the PSP, to get past Level 4, you need to use Aang's airbending abilities to navigate through the level's obstacles. Focus on defeating the Fire Nation soldiers while utilizing your elemental skills to solve puzzles and unlock paths. Look for areas where you can use Aang's glider or airbending to reach higher platforms. Make sure to explore thoroughly for items and upgrades to help you progress.
After the PSP 3000 they released the PSP go and the PS Vita either use UMDs
yes
Yes you can still use UMD disks in the PSP 3000. However you can not use UMD disks in the PSP Go.
If you mean PSP games on UMD, no, the PSP Go does not have a slot for UMD.
yes
Yes. The Nintendo DS has the same headphone port as the PSP, so the headsets can be used on both. It is probably recommended, though, that you use the PSP headsets for the PSP only, considering that it was designed for the PSP. In practice, you may use them for both. Source: I own a PSP and a DS :)
You can store the games for the PSP but can not play PSP games on the PS3
Nope, but if you have a PSP fat and a slimline PS2 you're in luck because of IR remote which allows you to use your PSP as a wireless controller.
No, the PSP Go! does not allow you to use UMD disks.