Back in my days, when I started as a designer, Logodesign was where I started. It helped me early on to understand how important it is to create a functional logo.
Logos have to work in color, in black & white, inverted, on a website, on social media, for an app, and any product/surface or print material of the company. So don't forget to ask questions and understand the needs of your client/user.
I still love to doodle around and create logos for startups or selected clients. Even though I don't have much time for it nowadays.