Basic stuff and where to start Building.
Basics
Create the base services of the web - a homepage. This is a skeleton site that you can build up on to get a production site by adding features like separating data and plugins, db editors, plugins, themes and other tools and features. WordPress is the # 1 CMS.
history
We need something to run VM's or LDC's on. You could start with running VM's on your daily driver with Qemu/KVM or even VirtalBox. Then migrate to a dedicated HomeLab: a old PC, a Raspberry PI, a decommissioned server or DIY something - the choice is yours. Or get some NUC's or Raspberry PI's.