I started in Dynamo. I wrote down steps for how to do tasks I did regularly, and tried to replace each workflow with a dynamo script. Then I eventually started to replace them with python.
For Grasshopper I started to try to rewrite dynamo scripts in Grasshopper. It took some time but I’m pretty stubborn. The main ones I started with were for Stadia.
Facades are a really good way to learn GH, they’re fun to do and teach you a lot about data trees and geometry.
Here is a list of Facades in order of difficulty, try creating these 
If this an option for you’ll it’ll give you a lot of really useful knowledge, friends, opportunities and time to learn. Not only that but when you apply for jobs you look nicely certified.
I hope some day you can have 100% of both