I disagree here - we are living in a golden age. Modernist series of books does amazing job in breaking down cooking to technique and they are good with classical cooking too. And easy to pirate.

youtube is also full with high quality content. Looking right now in por umm incognito mode on chrome for croissant recipe - from the first 20 recipes - 10 are with viral headlines so not worth watching, but the other 10 seem pretty solid.