This is my first real afghan. I did this over 2 months. Every night. Sometimes day and night, while the kid slept. Each round took between 5 and 7 minutes. 121 squares. 7 colors. Only one repeated pattern. Queen size and warm as hell.
Many lessons learned.
If you really want to learn crochet. This is my recommendation. Decide on a project. A big one. And go for it.
This is the most basic granny square there is. I love these colors.