This tutorial assumes you have already

• Read the Pre-requisites
• Downloaded the latest Forge MDK
• Setup your mod folder as described at the top of the main Forge 1.15.1 tutorials page
• Read and followed 1.0 - Gradle Configuration

Follow the tutorial for your prefered IDE (I personally recommend IntelliJ for the reasons laid out in the Pre-requisites)

IntelliJ (Made for IntelliJ Community Edition 2019.3 (released November 28 2019))

IntelliJ Old (Made for IntelliJ Community Edition 2019.3.4 (released November 28 2019))

Eclipse (Made for Eclipse Photon (released June 2018))

VSCode

1.2 - Basic Mod