with only 0.1 it is a low number if you want high profits quickly, the bigger you invest the more profits you will get. it is a provision in the game of investment.
Well OP is just new here so 0.1btc is I think reasonable to start up then he can just add some when he already profited.
But of course, he shouldn't expect high profit with just amount but still it will be the safest way here to start the game.
Just do trading with undervalued coin and have patience for it to get pump. It's not a easy road to take but surely will be rewarding.
Yes in very beginning it is important to take start from a little amount, because at that stage we do not have any knowledge and experience about gambling, therefore there are more chances to lose everything. I think it is important to get experience first and after that should invest a big amount in gambling, but still we should not exceed the limit from where we do not afford the amount of money to lose.
So just invest what you think you can afford in everything. Don't invest quickly in a thing that you're not used to do o@r you'll just end up to nothing. In everything you do, just think first what will be the consequences that might happen so you'll know what actions are gonna be apply.