As is usual with the Internet about 90% of what you find is somewhere between questionable and total crap.
Actually I have found the opposite to be true. I have learned everything from making hand planed bamboo flyrods to using a mill and metal lathe as well as knifemaking from the internet.
The internet provides you more information then any other resource. It is the persons ability to process the information they come across and figure out what is accurate and what is not. If a person is poor at analyzing and comparing the information they can end up using the incorrect methods...but for the most part the correct method is online and can be cross referenced with other reliable sources.
People seem to bash Youtube videos all the time when it comes to knifemaking and I have found them to be extremely helpful and accurate in many cases and really help cut down the learning curve when it comes to knifemaking.
I think of people spent more time watching the skilled craftsman on Youtube they would cut down their learning curve extremely but it seems if it is not taught in 30 seconds people move on. It takes hours of watching YouTube Video to cut down years on the knifemaking curve.
What I have often found is people giving away tons of advice but when you try to find an example of their works....you often get crickets or a few lousy picts that purposely hide what they have done.
When people post tutorials online, close up picts of their work and videos...they are not just saying the words they are showing what they produce to back up what they say.
I believe people need to Google a knifemaker and check out their works and see if their if their advice actually matches what they make.
That is what is so great about our thread here on what is going on in your shop....You can actually see the skill of people you chat with here and can see if they really can do what they say they can do.
If 90% of what you find is questionable or full of crap, that simply means you are spending 90% of your time on the wrong websites.