The best resource for you at this point is the Crash Course. It provides:

-Revision videos, notes, formulas sheet

-Solved Essay exam videos with tips, relevancy guide and past papers.

-Practice Questions and Mock Exams

-Mobile app for high-Yield videos

You can see the details in the following link:
The High-Yield (aka Summary videos) are excellent for revision.  They are about 12 hour in total duration.
The Essay Exam videos are about 15 hours.

The Crash Course contains discounted prices and hence excellent value for money.  
If you were to buy the items separately, the price would be over $450!