This page has links to relevant courses and also books.
LegoEngineering.com has a list of EV3 courses HERE.
Fun with Beginner LEGO MindStorms EV3 Robotics from Udemy has 41 lecture and 3 hours of video for absolute beginners. Not free.
The Robotics Acedemy of Carnegie Mellon University has an EV3 Curriculum available free (?). The Introduction to Programming LEGO MINDSTORMS EV3 Curriculum consists of 50+ videos, PDFs, quizzes, and includes easy to use step-by-step videos.
Carnegie Mellon University also has an EV3 course using the textual language, RobotC, which is like C and therefore probably rather difficult - it's a pity there doesn't seem to be a popular way of using Python with the EV3 yet. But at least there is EV3 Basic, a very easy-to-learn textual programming language for the EV3 - see my site EV3Basic.com.
STEMRobotics has an EV3 course called STEM Robotics 101 EV3
Rowan University has a course Educational Robots for Absolute Beginners - EV3 which is specifically designed for K-12 teachers.
EV3Lessons.com has a lot of free materials.
Stemcentric has some good introductory videos.
Dr. Graeme in Tasmania has good EV3 tutorials (he is gradually updating his NXT tutorials for the EV3). These tutorials work with both the retail and education versions of the EV3.
W.A.F.F.L.E.S. Community Robotics have dozens of Youtube videos about the EV3 but so far they seem too basic to be much fun.
HERE are some more 'EV3 tutorials for students by students' (fifth graders i.e. 10 year olds). Again, probably too basic for a clever clogs like you?
TigerTechEd has a Mindstorms section.
Youtube has, of course, about a million videos about the EV3 and a billion videos about the NXT.
Check out these books:
Classroom Activities for the Busy Teacher: EV3 by Damien Kee is the basis of my robotics classes. This book is written for teachers are proposes a 50 hour course for students aged 9-15, so it will probably need adapting to suit the time constraints of most schools. This book is available in both paper and pdf formats and is also available in French in pdf format from damienkee.com. The translation should be of excellent quality... because I did it myself!
Learning Lego Mindstorms EV3 is an excellent free PDF ebook by Gary Garber, published by Packt. The 284 pages include some advanced topics like data logging and the use of other languages such as RobotC (but nothing on EV3 Python or EV3 Basic, grrrrr). See also HERE.
The LEGO MINDSTORMS EV3 Discovery Book by Laurens Valk is very good - you can look inside the book and buy it if you wish on this Amazon.co.uk page. This book is mainly meant for the home edition of the EV3 kit.
The LEGO MINDSTORMS EV3 Laboratory: Build, Program, and Experiment with Five Wicked Cool Robots! by Daniele Benedettelli. This book is for owners of the home (retail) version of the EV3 rather than the education version. It's peppered with comic-book scenes and explains some rather advanced topics - the level of complexity of the program that controls the T-R3X model at the end of the book is truly impressive. A good buy, then, if you have the home version.
Lego EV3 >