>Step 1: Understand BTC history
Since the beginning, bitcoin's value has gone through a cycle:
>START: price doesn't move much
>price starts rising
>bitcoin gets hype (in the form of media coverage, memes, etc.) and an amount of people proportional to the hype and buy high
>people stop buying
>the people who understand start selling because it won't go much higher
>some of the people who bought high sell low
>the others forget they have bitcoins, making the price higher permanently (though not much higher than at the beginning)
>goto START
This cycle can be seen as a slightly inclined valley growing steep-as-fuck peaks.
>Step 2: getting a wallet
Choose your point in the cycle, get a wallet and buy some satoshi (BTC equivalent of the cent of a cent of a dollar). You can also mine it, but it will be very expensive due to the way it works, and you may end up not earning anything from it.
>Step 3: wait