Thank you for your answer.
Can you tell me where can I find low cap coins ? Where buy this coins ?
And do you have a Portfolio of low caps ?
Thank you.
Low cap as in low market cap.

Anything below 1 million has great potential.

Always research the project, don't go throwing your money around at everything you find.
http://coincap.io/https://coinmarketcap.com/When you buy coins for hold, did you store the coins on Bittrex or Poloniex ? Or on a private Wallet ?
I wondering that because if I buy 10 differents coins I need to download the 10 wallets ?
Yes, for long term holding you need to store the coins in your own addresses.
Many of these tokens are built on other systems like OMNI, Counterparty, Ethereum, the number of wallets you need may be very low.
Only install trusted software in your computer, if you are dealing with high amounts, learn how to set up secure off line wallets.