Primary resources

OpenStax: The section Normal, Tension, and other examples of forces from chapter 8 of the OpenStax textbook has great discussion about inclined plane and how to decompose vectors with a rotated coordinate axis.

Physics Classroom: Inclined planes

Doc Schuster describes techniques for solving inclined plane problems

https://www.youtube.com/watch?v=BEyWcYG5g68

This a short video lecture by APlusPhysics on Ramp and Inclines;

https://www.youtube.com/watch?v=j8R9PS_sVP8

https://www.youtube.com/watch?v=vQqB_MBVPXw

Secondary Resources

In addition to the textbook above be sure to read the EasyPhysics Inclined Plane with Gravity section which describes decomposed forces on an inclined plane a little differently.

Again, openstax is a great resource. Here, they discuss different types of forces

Other Resources

Here is a fairly long MIT Lecture on Inclined Planes and Friction which is worthwhile to watch given any extra study time you may have. 

https://www.youtube.com/embed/lXhtdUMt6Ek
 

Physics Classroom introduction to inclined planes, 

www.physicsclassroom.com/class/vectors/Lesson-3/Inclined-Planes

EasyPhysics quick inlcined planes quiz, 

www.easyphysics.net/ch5/ch5.htm#Sec3

Doc Schuster describes techniques for solving inclined plane problems

 https://www.youtube.com/embed/BEyWcYG5g68

This a short video lecture by APlusPhysics on Ramp and Inclines; 

https://www.youtube.com/embed/j8R9PS_sVP8, 

https://www.youtube.com/embed/vQqB_MBVPXw