How hard is for an european to move to the USA? I want to hear someone else's experiences. How hard it was to find a job there?
There are basically two ways to move to the USA: 1) Get a green card (residency/work permit), then you look for job like you would in Europe. 2) Get a work visa like an H-1B. This is sponsored by a company and they do all the work. If you leave that company, you have to either find a new job within a very short time period or go back home. There is a limited number of them, and they are released only once a year. H-1B is time limited but can be extended, and you can convert it to a green card after 5 years, but that is not that easy.
So if you really want to move more or less permanently to the US you need to obtain a green card. There is a yearly lottery (diversity visa lottery). It is open once a year, for about 1 month. It is actually open right now, so you have about 2 more weeks to apply. It is free, and only use https://www.dvlottery.state.gov/ to apply. Do not pay any scam companies.
What you win is a chance to apply for a green card. If you win, you still need to be eligible (have enough education, not committed any crimes, etc). Around 100,000 applicants will win, and 50,000 green cards will be given out.