Now, I'm no beginner, but I would probably want to know the answer to the big question: WHY Java? And to make the answer that more appealing I would want to see some real life examples of where Java is used today and why should anybody be excited about the language at all.
I've looked at your articles and it doesn't seem like you have answered this question yet.
Feeling as this is probably not what you expected as an answer, I think an article on data encapsulation, inheritance or the three wales of programming aka iteration, repetition and conditionality would be a good step forward.
Hope this helps in some way =)