Investment has to start with good understanding about Bitcoin fundamentally, as well as knowing about its risk and chance to get profit. All things need to be based and learned from Bitcoin white paper, available learning resources for beginners, and historic price and ROI of Bitcoin.
After have good knowledge about Bitcoin, it's time to find a good investment strategy, and among many strategies, Dollar Cost Averaging is a best one for almost all investors.
https://dcabtc.com/https://costavg.com/ I don't think the things you mentioned are really necessary to start investing in the early stages for new investor or the things you mentioned may be very important to learn at an early stage. I'm telling you to start investing in Bitcoin with just a little knowledge and a source of discretionary income. Maybe through this you will be able to continue investing continuously. Once you start investing, you will gradually learn more about investing and be able to gather all the information about Bitcoin.
For example, just as a student first enrolls in school and then gradually becomes educated, similarly in the case of investment, When an inexperienced investor starts investing, he gradually becomes experienced in investing and is able to understand everything about investing. However, in the beginning, you only need to start with eagerness which is very important for you. You can start with a small amount of money.