Making stuff to specified dimensions has a well understood workflow. Order of operations matters. That problem dominates machining. It's a big deal for carpentry, too. It's not hard. Most people figure it out before the second time they build something.
(Although making anything stay at specified dimensions from Home Depot "fresh from the tree" lumber is difficult. That is why kiln-dried lumber exists.)
Wooden boat tension joinery - now that's hard. You need the results of several centuries of puzzle-solving and dealing with the effects of water to do that well.
There was some article a few years back on HN about two incompetents trying to build a cabin in the woods, with too little experience, too little planning, and too much drinking. Their worst mistake is that they didn't know that you build roof trusses at ground level. (Or just buy them prebuilt.) Then hoist completed trusses into place. They were trying to stick-build roof trusses up in the air at roof level. That did not end well.
This stuff isn't rocket science. There are books easily available, and lots of people who've done it before.
(Although making anything stay at specified dimensions from Home Depot "fresh from the tree" lumber is difficult. That is why kiln-dried lumber exists.)
Wooden boat tension joinery - now that's hard. You need the results of several centuries of puzzle-solving and dealing with the effects of water to do that well.
There was some article a few years back on HN about two incompetents trying to build a cabin in the woods, with too little experience, too little planning, and too much drinking. Their worst mistake is that they didn't know that you build roof trusses at ground level. (Or just buy them prebuilt.) Then hoist completed trusses into place. They were trying to stick-build roof trusses up in the air at roof level. That did not end well.
This stuff isn't rocket science. There are books easily available, and lots of people who've done it before.