Tools: What do I need to focus on?

I would like to be a full stack developer and someone who can dissemble and assemble computers from the monitor to the motherboard. What should I focus on to make this dream a reality? I know a bit from both ends I am still currently learning full stack development but I am also interested in the hardware side. I know simple hardware things like how to remove and install battery, hdd to ssd,how to clean internal parts. Templates let you quickly answer FAQs or store snippets for re-use. Are you sure you want to ? It will become hidden in your post, but will still be visible via the comment's permalink. as well , this person and/or