I started with a managable amount of money like 150usd to put mainstream coins BTC and ETH.
For a few weeks I did day trading; tried to understand trends, ecosystem. Then I understand the impact of news...
Slowly I increased the amount I have. Came up with my own strategies...

Now I have a Trezor wallet. Using different exchange sites; exploring altcoins...

Most of important: I believe in cryptocurrency future.