Lately I came to a conclusion that all instructions fall into two categories: basic tutorials for absolute beginners and huge technical documentations.
If you are a smart person with general knowledge of computer science, software, operating systems, programming languages then you need something between.
That's why I've started writing down a detailed, step by step instructions with no introductions, prefaces, general concepts. I hope you find it useful. If you want to share your knowledge in this approach send me your notes or a link to another valuable resources with that kind of contents.
How to use DBDesigner along with PostgreSQL
Quick reference of Java with equivalence in Progress4GL
Connecting to Internet via mobile phone (This is only in Polish, as it explains some local configurations, sorry...)
DbasePsql: Convert .dbf files into PostgreSQL
Progress technology