China Travel Guide

Helloooo…
In my lifetime i would like to travel.
I would love to go to America including( los angeles, las vegas, hollywood) Italy, china(maybe) london and queensland!. I really need to save up! LOL.
Has anyone been to any of these places? Do you recommend getting with tour guides or just bring a friend and just travel around, [...]

I have 2 weeks to travel in Asia and was wondering where would be the best place to visit. I have narrowed it down to China, Japan or Indonesia. Any suggestions or advice?