I have recently published some new material intended to help people master Arduino programming.
It is at...
The tutorials do NOT cover "setting up", but they should be helpful for novices or intermediate Arduino users.
They are probably more useful as a "course", to be followed through, as you might read a book, rather than as a collection of "how to"s to dip into.
The "grand finale" is an Arduino based access control system.. full sourcecode is provided.
Let me know what you think? Hope you find the material useful.