@Nimbus_firebolt Hello, I don't mind at all!
My first tip would be to check out https://designschool.canva.com/ - they have many amazing courses, tutorials and events that any designer would find useful. Designing on Canva isn't much different from any other platform (especially if you start from a blank Canvas as I do), so to excel, one should know the basic design rules & practices. Most cover tutorial books on Wattpad have you *covered*!
I've been thinking of doing a video/tutorial/guidebook sometime this year - I believe that might help you better as I'll dive more into *my* Canva tips & tricks and how I make covers there.
Also, I get my resources from various platforms. Currently, I mostly use the resources on Canva since I have access to PRO accounts. Additionally: Unsplash, Pexels, Creative Market, Pixel Surplus, iStock, FreePik, Lovepik, etc
I hope that helps, and have a great day as well!