The channel "Essential Craftsman" is finishing building a spec house. It's an American-style house, with timber framing. The host, Scott Wadsworth, knows a lot about contracting, and gives a lot of details and advice.
My impression after watching most of it: It might be "easy" to build your own house once you are an experienced contractor. If that's not you, then it's going to be a second job, or even a third job (building and learning). You will need to hire and manage subcontractors - the kind of job the contractor does. If you like that sort of thing and that's how you want to spend your time, go for it. I personally think that my time would be better spent finding a better job in tech and getting a promotion, so I can hire a professional to do all that.
As a former builder and current handyman (now cloud architect) I can wholeheartedly recommend this channel. That guy knows his stuff. My only warning is that he's a perfectionist and purest. If you do things his way without any experience it will take you 10x as long.
Is he really though? His non-spec-house videos talk about allowable tolerances and he free hands beveled cuts on a Skilsaw. Granted, those free hand cuts look better than my 90deg ones done with a saw guide but still, would a "perfectionist" do that? I'm specifically thinking of that weird looking shed video.
I think he only really goes over the top with concrete.
The playlist currently has 126 videos. It's here: https://www.youtube.com/watch?v=AGCC-_Cuhhw&list=PLRZePj70B4...
My impression after watching most of it: It might be "easy" to build your own house once you are an experienced contractor. If that's not you, then it's going to be a second job, or even a third job (building and learning). You will need to hire and manage subcontractors - the kind of job the contractor does. If you like that sort of thing and that's how you want to spend your time, go for it. I personally think that my time would be better spent finding a better job in tech and getting a promotion, so I can hire a professional to do all that.