I pick a part of a computer I don&#x27;t know it works and try doing it myself.<p>Everything from making a cpu from 74 series logic to writing a toy compiler. If you don&#x27;t have much free time, just researching how to implement various parts of a computer works is good as actual implementation takes a large amount of time (eg: the cpu required learning basic electronic skills). Now that I&#x27;ve gone through a basic computer stack, I&#x27;m doing that bits that interest me in more detail.