Do be careful with YouTube-- it's easy to end up following other people's bad habits and mistakes. Most people on YT have no idea what they're doing even if they pretend like they do. If you're a beginner and you don't know what to look for, it's easy to fall in that trap.I also use YouTube and follow a lot of Graphic Designers on Instagram where a lot of them share details of their clients and the concept before revealing the design. Freelancers with a large following tend to do this more. This is great for inspiration. I also check agency galleries for inspiration, such as Repeat Logo. They have a huge catalogue of logos you can browse through.