Are there resources online on how to do this? I've always wanted to learn more about construction work, at least to the level where I can do some minor repairs.
Construction has to be something like one the most common and universal of human occupations, you can surely find heaps of documentation.
That being said, the actual techniques used tend to be localized and adapted to specific local conditions, available materials, geography and climate, labor cost etc. There isn't one standard way of going about it, you always learn the local Community of practice [1].
If you are looking to build the stereotypical noth-american stick frame house, the work of Larry Haun comes to mind [2]. The other major tradition is the European brick/concrete/AAC house, again, extensively documented; but you would start with a well engineered project designed by a professional, since failures tend to be sudden and catastrophic.
As for "repairs" the number of trades is almost endless, from the core like roofing, drywalling & paint, plumbing, gas & HVAC, electrical - which today includes house automation and data - concrete work, landscaping etc. to the uncommon like specialist thermal & insect treatment, stonework, chimneys etc.
Each trade has its own community language used by tradesmen in a certain geography, so you need to sink at least some hours to watch Youtube videos etc. pertaining to your specific problem. The number, complexity and local specificity of these trades is so vast that's inconceivable to learn them in bulk, you would always deal with the problem at hand, and if you continue this for a suficient number of years you become knowledgeable in the construction field.
And it's all made by humans (other than creepy cartoons and listicles). I had to take apart my vacuum cleaner to debug it (turns out the power cord got frayed inside the bobbin) and the websites were full of autogenerated crap.
YouTube? There's a channel by a vacuum cleaner repairman that has a video about my model. Turns out I didn't miss any screws or latches, I just had to give the housing a stronger yank to open it.
