No one should invest a huge ammount expecting to make a huge profit, usually this turns into some profit when it doesnt turn into a big loss, thats why first learn and know the market, see the max and minimum price of those altcoin, and just invest if you have sure, dont follow others sugestions, make your own rules to sucess.
Yeah and initially its good to start with a small capital to minimize risks and there is no limit in trading you can start even with a very little amount but the only issue is that if you invest small capital then even your profits will be small and you will actually not feel the profits if you are going with a smaller amount.