Just a little blatant self promotion 
If you have a basic knowledge of working with C# scripts in Grasshopper but want to take it to the next level and start building your own GHAs, you may be interested in the webinar Iām teaching tomorrow for performance.network. We will go through the basics of plug-in development - the structure of the code, how to get data in and out of a component, and the debugging process.
The webinar is at 12:30PM ET on Wednesday Dec 7. Sign up here: https://attendee.gototraining.com/42b11/catalog/5127514576297836800?tz=Europe/London