I'm in the process of filling up the classroom with helpful information and resources. Soon there will be a full course teaching everything you need to start earning with you own small technical business named Business Basic Blueprint.
Feel free to wait intil it is complete. But if you are curious in the meantime, it did upload a chapter talking about undertanding simple business economics. For the more seasoned entrepreneurs this might be obvious but it probaly can help others to understand business better so better decisions can be made.
Check it out here: Classroom -> Business Basics Blueprint -> Something to Sell -> Understand Simple Business Economics.
Now only in text form. In the future also in video format. There is a free handy spreadsheet to grab!