I would start it on the fly. What I mean by on-the-fly is that just start to work on your real case and search for help on the web or this site for help if you don't know what to do. For sure, it will very beneficial if you spend some time to learn some basics first. This is what get on to PowerShell.
I have some blog posts on PowerShell, especially 3-serials on a real case I posted recently. Search for davidchuprogramming or go here. Good luck with your PowerShell journey.
