If you want to gain knowledge about everything related to Bitcoin, then that's fine. But you don't need to know all of this to own Bitcoin or hodl Bitcoin. The most important thing for a Bitcoiner who invests in Bitcoin is to understand wallet security, to know the best wallet to use for hodling Bitcoin, and to understand the volatility of Bitcoin. If you have this understanding, investing in Bitcoin won't be a problem. As a beginner, don't think you need to know everything about Bitcoin before investing.