In order to constantly improve the quality of the tutorials we produce, the exact "recepy" of how we did it along with the tools we've used needs to be shared here along with the description of a problem and the solution on which the particular tutorial was made.
Once a tutorial is published, same one must be done for the other OS's. Mainly, the tutorials are expected to be made for Windows, Mac OS X and Linux (Ubuntu).
For example, the lightweight online tool I've used to make some tutorials lately, SCREENR was reviewed in this forum topic .
Other tool I've used for making online presentation is Google presentations. Review and tutorial are on the way