1. Determine the time frame for which you are budgeting.
2. Establish goals - How much must I save for a big purchase? How should I split my savings, spending, etc.?
3. Earn money!!! You can't budget if you don't have money.
4. Stick to your plan. It's difficult sometimes, but the only way to have a successful budget is if you stick to the plan (with some exceptions when necessary).
Hope this helps!
A great way to start budgeting your money is, always keep track of what you earn and what you spend. Give yourself allowances for what money can be spent and what should be saved. You have to know your spending habits so you can determine ways to save and maybe make some cuts. Regardless of how much you may earn it's always a good idea to know how it's being spent, bills, fun, food, etc..
There are many apps out there that will help you in keeping track of where you are spending your money and where you can possibly save. Or even just writing down your expenses on a weekly basis to give you a better idea.