For those who are more self taught and not working in the industry, how have you learned complicated or more difficult concepts? I’m trying to figure out hinges for instance and soon to figure out dovetails with screw holes. Aside from trying to find videos on other products and figuring out how to translate the way to build it, any other tips? I heard some folks might have got old design books on eBay but just trying to see what is the best avenue to go down.