Ask your parents to lend you money or do household chores in exchange for money (if your parents agree to that - they may expect you to do them anyway!) Also consider trying to get a part time job (although this may not be as quick as you hope).
Take the bus, subway, or taxi. if none are available. walk.
You can do this many ideas;
Babysitting
Washing cars
Helping people with computer help
And selling old toys
Prostitution
There is no quick way to get money on Movie Star Planet.
There is no quick way. To make money one must have the right ideas. Or be involved in the things that generate money.
Madeline Carroll
A checking and savings bank account is a great way to teach a teenager how to spend and save. They will learn how easy it is to save money and how to watch their spending.
Get a job of some sort. That's really the only way to "quickly" earn money for a horse.
Have lots of money, there is no cheap way of doing it. If you are combat level 70+, try killing green dragons and selling their bones, this is a quick way of getting money.
Sell rocks
30
A teenager can use a budget both for saving and spending. A teenager can practice saving money and also budgeting to be able to purchase wants.
you cant unless you ask
Wash cars, cut people's grass, sell unwanted stuff, look for a part time job.