Comprehensive knowledge of the instructor and his approach towards coding
Provided me with tools how to write better code.
The teacher addressed many relevant topics for clean coding with practical examples.
Ben van Oeveren - Movella
The atmosphere was very nice, much more relaxed conversation than classic teaching style. Also, several of the techniques, especially those I doubt would hold up or be worth it (effort-gain-wise) under "real world" work conditions (as mentioned above) made me reflect on my coding style, and why I do or don't do some things (both on topics presented int he course and related ones), which I don't do that often (needed the impetus) but is really useful, even if I come to the conclusion that my style already suits my needs well.
Greentube Internet Entertainment Solutions GmbH
I really liked that there were a lot of practical exercises in which you could put the learned immediately into action.