...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, or print reports (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. This is an upgrade to MSAut1a. The application now has an Appointment feature.
Find this and a General Billing program at: https://gotomarcus.com/currentswms/index.php