How much should you invest? Well that depends on your financial situation. But for most people that are doing ok for themselves (all bills paid, extra money to enjoy themselves) The general rule of thumb is about 15-20% of your income. based on the 50-30-20 rule of investing. 50% for all your bills (house, car, utilities, groceries) 30% on things you want, we still have to live(a night out for dinner and drinks, sporting event/show, new shoes) 20% goes towards investing. 

Just a little chart outlying how much you should invest based on your income. Only invest in anything if you can afford to lose that money with hopes of gaining big because if we know anything about crypto and/or stocks anything can happen very fast. 

And as always. Keep your crypto safe. Always recommend using a Ledger wallet.  https://www.ledger.com/