I doubt that any of the things you mentioned need to be learned prior to getting started investing into bitcoin. A person can start investing into bitcoin and figure out the various topics that you mentioned as they are investing, whether they start with $10 per week or some other amount that they consider as a reasonable way to get started, and so it seems to me that getting started is one of the main things, and all you need to know is whether you have some discretionary income, like $10 and then you can get started and figure out the details as you go, and the more you learn, the more likely that you would be ready, willing and/or able to increase your weekly investment amount and/or to make any other adjustments based on ongoing learning.
This is quite understandable and considerd as the best advice perhaps Rome was not built in a day, a typical example of life reproduction stages can be a very good example, from fertilization process to an adult we can see that there is a necessity of one stage to occur before the others, getting started should be a priority when we have the disposable income available, and to crown it all the idea and concept of the DCA strategy should be taken advantage as an incentive towards the long term goals and objectives.
yes Rome was not build in a day, but It was not build with only one strategy just as you are concurring to what BITBAKKII is saying, same thing applies to BTC, accumulating large portion of BTC can't be possible with only one strategy, because with only one strategy you we surely be tempted to make a withdrawal when needs arise, to avoid this withdrawal when the needs arise you need other strategies like setting aside an emergency fund,because as a human being you have to feel the need of emergency,another strategy is having other sources of income and businesses and many more strategies, that is the only way that you can avoid being tempted to a withdrawal when the arise.