With NS help I collected the most interesting proposal of your answers and I made a small guide how to be ski bum or ski without much money. I think it can be useful.
1. Job in ski resort ( ski instructor, salesman, bartender, cleaning person, conservator or whatever),. Probably the best suggestion. You work on the site, you earn money and often as an employee of the station you can ski for free.
2. Urban skiing. You don't have to pay for lifts tickets. Food and life is cheaper than in ski resorts. The only downside is necessity of possession any acceleration equipment like banshee bungee or winch.
3. Equipment ( skis,bindings, poles, helmet, goggles, warm clothes and gloves etc. ) Buy it at once, pay more but choose better quality ( of course it can be used, but not damaged ). This will reduce the cost of maintenance and repair of these things.
4. Work a lot in the summer and save all of your money for gear and a pass. Tight the belt, save as much as you can and it will give great result.
5.,,One important factor is location. Location matters a lot.'' That's true. If it's possible it is best to live in the mountains or near them. This will reduce travel costs, which, depending on the place of residence may be high.
6. Buy camper. If you are going to do this for most of your life it's one of the best purchases. You won't have to pay for accommodation and further you can cook by yourself.
7.Steer clear of restaurants, avoid or reduce drugs,cigarettes and alcohol ( if possible :) ) and don't buy unnecessary things.
8. Sleep cheap. Hotels and expensive accommodation isn't really needed.
9. Go all in. Maybe you'll get sponsored.
If you have any other ideas. Just give it :)