Hello Everyone, i apologize in advance for posting this, because I'm sure it gets asked COUNTLESS times. But I've been doing research and CAN'T figure out exactly how to do it. Also, i am not very computer savy so please try and explain stuff in simple terms if you can! hahaha 
1. Anyways, i just got an iPhone 3GS Firmware V. 3.1.3 New Bootroom and i would really like to jailbreak it! If someone could please help me I'd really appreciate it!
2. If i ever decided i didn't like/or want the jailbreak would restoring the iPhone make it EXACTLY the way it was when i first got it?!
Thanks in advance for any help you guys can give me!

1. Anyways, i just got an iPhone 3GS Firmware V. 3.1.3 New Bootroom and i would really like to jailbreak it! If someone could please help me I'd really appreciate it!
2. If i ever decided i didn't like/or want the jailbreak would restoring the iPhone make it EXACTLY the way it was when i first got it?!
Thanks in advance for any help you guys can give me!