Start with learning about the market. Do not invest money that you need to use daily. And don’t be hasty with investment. You can start with reading blogs like Coindesk and cointelegraph
The problem with some investors, is they don't invest that money you've mentioned that shall not be in use for daily use. What they're investing is money that they immediately need in terms of buying the stuff that they need. It is because when they hear the term investment, either long or short, they're thinking about its profitability in a quick manner. That's why many of them are losing and don't see the greatness of being long and stable but requires long waiting for them to see the result.