$BTC is still the best bet so far. However, like all cryptocurrencies, it is necessary to take into account its volatility to avoid losing money on the investment.

Now, what can be done to earn bitcoins? One way is to accept payments in that currency and another is to participate in dynamics or games that offer satoshis as prizes.

In short, the best thing is to wait for each opportunity to increase your savings and have a good extra that can help you out of any bind.