If you are selling and/or repairing equipment you want to track (like computers, tractors, boats, snowmobiles, TV's, dishwashers or other things like that), this might be a good app for you.
It should give you practice in learning/use of Invoicing, and installing on the desktop, and programming in vba and MS-Access. Note that the free MS-Access Runtime is with the download . You need MS-Access if you want to work with the program code (part of Office 365).
The program processes Invoicing, Appointments, and Quotes, and produces reports for A/R, Inventory, History and Accounting Purposes.
See the readme file, and manual for greatest use of this App.
Find other free programs at: https://gotomarcus.com/marcusacademy/marcusmain/index.php