The concepts contained within a copyrighted work are not themselves copyrighted. It’s impossible to copyright an idea. Fair use doesn’t even enter into it, you can read a copyrighted work and learn something from it and later use that learning with no restrictions whatsoever.
The concepts contained within a copyrighted work are not themselves copyrighted. It’s impossible to copyright an idea. Fair use doesn’t even enter into it, you can read a copyrighted work and learn something from it and later use that learning with no restrictions whatsoever.