There are different options to kickstart an extension. This chapter offers tutorials for some common methods to kickstart an extension.
tea is a simple, well-tested extension based on Extbase.
This tutorial guides you through the different files, configuration formats and PHP classes needed for an Extbase extension. Automatic tests are not covered in this tutorial. Refer to the extensions manual for this topic.
Extension Development with Extbase, a video from the TYPO3 Developer Days 2019