Why not.It's completely safe if you are using hardware wallet or paper wallet.I'm not recommending desktop wallet as safe.Im using hardware wallets.If you're store your private keys,passwords on your pc,mobile or in web.It's a good chance for hackers.
I think Learning first before investing because if we already invest and we realize that we do not want a business like this we will waste our time and money. Bitcoin has an unstable price and in this case we may lose a lot of money.
We can not really believe in investing even in other businesses. Investment and business always have risks. Before we invested in something we had to know what we were doing. We have to learn before joining invest. We do not need to rush just because we heard that this investment is a good investment. Always remember that the hardest thing to give is trust and always remember that we not only invest money but also time, effort and patience.