Just be careful with online videos – there's an awful lot of really good, helpful stuff out there, but there's also some duff and even bordeline dangerous demonstrations by people who have little real experience. As with everything on the internet – be very selective and don't just accept everything as gospel!
With a book, at least you have a pretty good idea that whoever wrote it knows what they are talking about, as the whole process is long winded and costly up front compared to somebody just up to make a quick YT vid with a wobbly camera set up and elevator muzak!
This forum will provide loads of informed info as and when you come across specific issues, just search here first before going straight to YT
All the best, Mike