Smartsheet Core Product Certification for a new user?


My organization is asking that I get Smartsheet Core Product certified- I've used it a little in my previous role, but have a lot to learn. What courses would you recommend to get certified in a short amount of time?

I'm looking at a few paths but unsure what the differences are, and ultimately which path to choose- eLearning ($199)? Core App Path Self-Paced eLearning? Core App Path ($849)?

Any help for a newbie would be great. Want to truly learn (and ace this exam).