We need GUI tutorials
The courses are good, but they don't tell us how to make graphical user interface. Please add SWT lessons to Java course, and WinForms or GTK to C++...
Suggest it on Feedback, or make your own.
@Martin: SoloLearn has a Swift and an SQL course without being able to execute the codes. It also offers advanced topics as (user-submitted) lessons, e.g. machine learning in Python.
I'm using SWT for university, but I'd like to take a look at JavaFX instead. As far as I know it's more widely used.
Python — File Handling
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