I have been doing the same thing. I've also augmented each section with video lectures from Khan academy or other sources. For instance, their videos on the Jacobian were excellent for getting an intuitive understanding of it [1].

I also search for problems on the topic to help solidify my knowledge. You can almost always find a class that has posted problems for a section with answers.

[1] https://www.khanacademy.org/math/multivariable-calculus/mult...