You don't need to learn much to invest in Bitcoin. You can invest in Bitcoin only if you have basic knowledge about it. Bitcoin is a currency where you can learn about it while investing. However, a lot of knowledge and experience is required while trading.
If you are not skilled in market fluctuations, it is not possible to compete with skilled traders.
There are certain things prospective investors should learn before investing. These include how to buy Bitcoin themselves, how to store their Bitcoin, how to secure their wallets and prevent unauthorized access, how to avoid scammers, and finally, how to manage the risks involved in investing in Bitcoin. Every other technical aspect of Bitcoin can be learnt while already investing.
Those who fail to learn these things risk experiencing huge losses or even falling victim to scammers. Those who invest without trying to understand what Bitcoin is are not truly intentional about their decision to invest in Bitcoin. They are simply responding to the hype around Bitcoin and the misconception that it is a get-rich-quick scheme. If these people are not lucky, they will learn the hard way.