Yeah I know how important it is to know how to buy or accumulate bitcoin by myself, because anything investment one should be very careful and also source for help and knowledge that is the main reason why my brother is helping me out by teaching me how to go about it .
In other for you to deliberately learn and be conscious of what you're being taught, tell him to allow you do things by yourself and also ensure that you taking note of all the vital aspects of it all during your learning stage, this will make your being independent faster in knowing how to invest and other strategies required.
Also, when the time comes for you to be full in control, then make sure that you maintain high privacy levels as regards information to your asset and only discuss opportunities and speculations with your brother when necessary, don't also invest much for a start, because you may lose your money, start small and learn to build your portfolio.