Electronics is a similar situation to programming: from the right perspective, it's quite easy: all of the details are very small and simple. The complexity is

Electronics is a similar situation to programming: from the right perspective, it's quite easy: all of the details are very small and simple. The complexity is all to do with the way that many (MANY) small details are packaged together into a larger whole. Experience just helps you recognize common patterns, because you've seen them before. In theory, anyone with patience and determination can do this. The original article is well detailed for someone with knowledge of (or willingness to research) all the things called out, generally by name.