You have to give us more information.
Firmware version of the iPod
Your operating system
The version of Limera1n you are using
The exact error you get
At which point in the jailbreaking process you get the error
Just saying "it doesn't work11!!!!11!1!!1one!" doesn't give me any useful information.
Jailbreak and go to cydia.
Search "SNES A.D. Plus"
Install it.
Now your phone has a Supernintendo emulater on it.
Download "Zelda: A Link to the Past"
Have fun.
(It is actually better then the original SNES, because SNESAD+ has achievements.)
Ask your brother to re-jailbreak it. It sounds to me like something went wrong while he was jailbreaking it and Cydia was corrupted.
Also, when you get Cydia working, get the following things:
Winterboard
Five Icon Dock
Five Icon Switcher
Installous (You have to add the hackulo sourse cydia dot...
If it's your first smartphone, I suggest the iPhone 4.
A Blackberry is only useful if you have a whole bunch of friends who have Blackberries. (Because of BBM, which stands for "Black Berry Messenger")
The interface is better on the iPhone, and it barely took me any time to get used to the on...
It depends on what plan the phone was originally on.
Basically, if your friend has AT&T you're all set. Just reset the phone and pop in your SIM card.
If your friend is not on AT&T, you're gonna need to Jailbreak and unlock it.
Here is a link to all you need to know about jailbreaking...