I am out of money, and my family isn't the richest in the world
I want to especially go to Singapore, London, Australia, etc
But I don't know how I can do all those things with college biting at me, I want to travel the world when I'm 18, but when I'm 18 I will be expected to go to college.
I will go to college & will graduate but I want to travel the world & everything...
I guess there are two questions in this..
That is a wonderful ambition and it can be a life long obsession for many people. The world is a big place so you will probably have to do a little at a time - that's what a lot of people do. Once you graduate and have a job you can just start saving something towards the trip and soon you will get started. It is possible to have a working holiday in some countries and there are ways to travel at reasonable cost too. In the meantime you can enjoy the dreaming and planning and that can be really fun.
SUGGESTIONS
Study abroad - pick a college somewhere in the world that you want to visit to go to.
Take a semester off from that school and study in another country.
My father did it by joining the merchant navy..
When you hit puberty everything will make more sense and you'll realize what is actually important.