How to Build a Help and Support Page in SharePoint | SharePoint Tutorial

Create custom forms with Sharepoint Forms Designer tool

Customize modern forms for SharePoint lists in On-premise and Office 365 – Tutorial

Getting Started | Customizing Form from a SharePoint List

SharePoint framework tutorial: Set up your development environment and Create web part using SPFx

Set up your SharePoint Framework (SPFx) development environment

Set up your developer environment - Mastering the SharePoint Framework (SPFx)