Google - How do I become a prostitute in the red light district?

That's a bold career move, Marina! Well, Amsterdam is in the Netherlands, and prostitution there is legal and regulated. You might want to contact the city employment office when you get there (assuming you have a visa that allows you to work in the country). They might look at you funny, but they should also know a thing or two about the more legit side of the sex trade. The "window workers" are their own bosses, and if you're hot and exotic, you should be able to make a good bit of money that way.

Just bear in mind, a life of prostitution is not upwardly mobile or glamorous. You'll be having (hopefully protected) sex with strange, ugly men all day for 50 Euros a pop on average. That leads to all kinds of health problems, including Pelvic Inflammatory Disease, herpes, and different kinds of HPV that can cause cancer and/or ugly warts in bad places. (These problems occur when you DO use condoms. If you don't, the health problems are much worse.) You'll probably never get rich, and unless you live well within your income, you probably won't even make enough to retire.