Some people might be able to figure out their focus fairly early and clearly, and other people might not be able to develop a focus, so not everyone is going to figure out their own views on the topic, which may end up affecting whether they invest into bitcoin and how much they invest into bitcoin.... Some folks might be able to figure out that they are ready, wiling and able to invest into bitcoin based on 5-10 hours of study. Others might take 50-100 hours, and others might take more than 1,000 hours.
We cannot necessarily figure out these kinds of matters for others, and surely many of us longer time bitcoiners will suggest that a person does not need to figure out all of his details in order to get started investing into bitcoin, so a guy might start out with merely $10 per week investing into bitcoin, and that might be a relatively low amount for him to invest out of his discretionary income, and while he is investing his $10 per week, he also might be studying in order to figure out his view about bitcoin as compared with other places that he could put his time, energies and/or monetary value.
One must not hesitate in investing as soon as he understand Bitcoin and benefit of investing in it, whether it takes 10 hours or 100 hour. Take as much time as you can to clear your doubts but once you are familiar with Bitcoin then don't hesitate in jumping in. 10$ is not a bad start as long as a person is willing to invest it regularly because with time his knowledge and experience about Bitcoin will go up and there is fair chance that he will go bullish in future. Everyone of us is afraid in the start, it's the time that matures us.
We have discussed cases, that investing 10$ per week for last 5 to 10 years can give you an adequate number of Bitcoins. Based on that one can formulate a strategy on how to accumulate Bitcoin.