A good way to minimize the risks is not invest real money (or invest a little amount).
With some efforts you can earn bitcoin from faucets, forum signature campaigns, glambling (not recomended), trades, etc...
After achieve a good bitcoins amount you could invest It. If you lose all, you don't lose your money.
This is a great way to start, if you lost something it is not very hard to accept because your investment comes from your income. No need to get some cash from your savings but instead, you can invest from your profit.