The author of the EE section at KA has written about Thevenin's theorem...

https://spinningnumbers.org/t/topic-dc-analysis-special.html

I've seen and read it but I, personally really prefer interactive questions, complex examples of whole subject and especially Thevenin / Norton circuit analysis. There is this Th / N conversion subject but its low level. The real questions comes from Ethevenin (oc) or Inorton (sc) and this is the subject I believe not covered well generally, everwhere around and its irritatingly complex (many things to remember for an exam). But in the exam you encounter nice questions,as if it has been covered extensively(!) therefore you have to figure them out somehow by yourself in the semester. I mean, how hard can it be to add exams in these subject I just want to test myself a little b4 exam (at the very least, videos are preferred also).

Also I was gonna open new subject but in the context of Electrical Engineering - Circuit Analysis content request:

I also want complex Node and Mesh analysis. Fill in the blanks answer matrices of 4x4 etc. These crazy subjects making you sign mistake over and over therefore I want to end this by testing myself on Khan academy exams. I mean supernodes because of the voltage sources in nodal analysis / current sources in mesh analysis and their usage with dependent sources. (Khan lesson difficulty is for you to decide, I just want to state that standard usage may come to those points in nowadays system, sadly)

Also I want to state that since our instution shows the "best practical way" of nodal analysis they go full throttle in the exams. It's little bit different than Khan academy KVL signs, (negative of them) so I thought maybe this site also might teach that too: In the node analysis we look at the currents leaving the node therefore all equations start with our node as positive, we write everything from selected node (or supernode) perspective, (a-15)/4 + a/2 + (a-b)/2 = 0 etc... easier to write and calculate (than deciding KVL / current directions and we dont look at resistor polarity this way). also in the mesh analysis we see that in matrix form they are just sums of that mesh's resistors or intersections with other meshes respectively, so it may be a nice thing to touch upon.