Need help turning GIMP into Photoshop

So, I was hoping on getting CS6 for Photoshop, but I found out that they apparently changed the buy once system to a subscription only system for 20/month.

I'm not doing that if I can help it.

So, I'm trying to convert GIMP into something reminiscent of Photoshop but I realized pretty quickly that I have less idea of how to do this than I do of how to use GIMP...