A Crash Course in Quaternions (Unity 6 Compatible) (Udemy.com)

Excellent. Good explanations and examples. Simple but very practical practice projects to reinforce how to actually use quaternions. This is the 3rd source I've looked at for trying to understand this, and is the best one in terms of just being able to use the things properly in your project with just enough underlying understanding so that you're not just copy and pasting code with no idea what it's doing. Well worth the time.

This was a great course covering the rudimentary basics of the topic. Being a free course, this is over and above what I would have expected, and the fact that it is illustrated in code with visual outcomes only helped escalate things to a higher level. The topic of quaternions is no small matter, and the fact that it is broken down to simple components here shows the great teaching ability of the instructor.

This is a great course, with plenty of coding applications. As a result of taking this course, I have gained a great deal of knowledge. A funny thing happened, I signed up for the course in order to understand the mathematical side of the quaternions, and I ended up applying for rotation. However, I thoroughly enjoyed the course and learned a great deal. I would like to express my gratitude to Penny, who is an excellent instructor.

The course offers a quick overview of all the topics covered in the main course, to which this is linked, except for the SLERP. It makes me want to buy it, but I had already done so...

I was expecting to understand how the quternions work under the hood. But this course only talks about how to use Unity's helper methods, which use quaternions under the hood. Nevertheless, it is a nice introduction to rotations for beginners. And I did better understand a couple of used methods myself. Also, you can't argue with free :D

Great course. I did hope for a bit more of a deep dive into the mathematics of quaternions, I did get a thorough repetition of Euler angles (but that's not what the course name suggests). The course _did_ have great pointers to external resources (that did have those mathematics I craved). The course goes deep into how to apply quaternions in Unity, which of course is the more important skill to develop. Finally, the final exercise had the kind of space physics that I find strange (where you only move while accelerating and have no inertia) - luckily, that bugged me enough that I had to fix that and thus got lots of time to practice

The instructor gave clear and concise instruction about this complex topic. She provided concrete examples of the functions and made it very accessible to everyone.

Great tutorial--I learned alot. One part of the series involved making rotations with matrices to rotate a little airplane on a stick (vector). This was a little frustrating because I tried to play around with the scene before watching the whole video. It didn't take long for me to run headfirst into what would later be called the "Gimbal Lock" problem, though unbeknownst to me at the time, I thought I had done something wrong since the rotations were producing erratic results. Without continuing to watch the video, I spent WAY too much time trying to troubleshoot and rewrite the code trying to hack it to work correctly. Finally gave up and watched the rest of the video only to find out this "unexpected" behavior was, in fact, "expected" in that it was demonstrating the gimbal lock problem (FACEPALM!!!). Anyways other than that, the rest of the material was good--I just need to watch the whole video before starting it over, and actually following along. I will take personal responsibility for my lack of patience and over-enthusiasm with that particular video, but other than that, everything else was great. Thank you for the info!

Another really good course from Penny! She not only gives good info on how and why unity uses quaternions for rotations, but she also gives a really good layman's overview of how they actually work.

The course is well paced and the instructor is clear. However, I feel the course did not reflect the title. Maybe "A Crash Course on Using Quaternions in Unity" would be more appropriate. Also, it would be nice to have a section about debugging. When some object has a weird orientation and you fire a debugger, how to interpret the quaternion values you read?