I´d like earn 0.1 BTC to begin trading
Why specifically that number? Why are you not being ambitious and hoping for earning more?
Is there a chance earn 0.1 BTC from altcoins
Altcoins are not "money making schemes" They run on the pump and dump by bagholders and shills. You can learn day trading for altcoins which is the way to go but is not what I recommend to a newbie. Long term trading methods are good for bitcoin. Overall bitcoin should be your point of focus so dish out some money first because it does not come from thin air.
get loan 0.1 BTC without backing ?
Impossible here. Visit your local bank/pawn shop if you are in dire need of money.
I have not money or way how earn.
Many other members of this forum are working to get paid.
I can work for some crypto project.
Depends on what skills you have. Nobody will give you money for free just like in the real life scenario.