Where to start with Hybrid?

If you already have PS, there is no need to also get Elements. Even though you can easily scrap with PSE, PS CC gives you so much more than Elements. I've never worked with Elements, but I think it is similar enough to PS CC that you could do a tutorial or class that uses PSE and still be able to do everything in PS CC. 

There are a few articles about the difference: Here is one

Echo-ing what everyone else says - if you have PS, you absolutely do not need PSE.

PS can do everything that PSE can do but PSE cannot do everything that PS can do. PSE has basic photo editing 'elements' of PS.

I'm currently taking the Ali Edwards' Hybrid class and she has tutorials using both Photoshop and PSE. I'm on the third lesson and so far she is tackling the exact things I want to learn, in order. I have tried using YouTube for the tutorials but couldn't find exactly what I want to do as it pertains to scrapbooking.

Her classes do go on sale several times a year so you can keep an eye out for that if you don't mind waiting. It's really a jam-packed class, though, and worth the price in my opinion.

Here are her lessons in the class: Downloading and Opening, Organizing, Printing Basics (includes PNGs and re-coloring them), Going Mobile for Hybrid Projects, Brushes Basics, Brushes as Patterns, Printing on a variety of materials, Brushes and the Silhouette, Silhouette Print & Cut, Journal Cards, Extracting Elements from Journal Cards, Hybrid Process, Overlays, Playing with Vinyl, Intro to Layered Templates, Working with different sizes of layered templates, Photo Collages.

Some lessons are "bonuses" from guest teachers, so those lessons might not be in both PSE and PS, but having used both in the past, I think you could really interchange them in a lot of ways. I originally used Photoshop for a decade or so before switching to Elements about 2 years ago and haven't had any problem with the switch.