I have just created a block that I'm quite pleased with but there are some things that I don't know how to do and can't really find tuts for.
First thing is that I want to create a package of it which I managed to to, but, I want to have a settings page on the dashboard with one option really. I got the single page there but how do I proceed?
I want to be able to get the option value from my block easily, I also want to be able to edit the value in settings.
Most packages use the Config table of the database if there are only a few package wide settings. There is a class to interface to it and more info in the documentation.
http://www.concrete5.org/documentation/developers/system/config-pre...
Your dashboard single page will need a controller and a view. The controller can use the config for storing/retrieving the settings.
Your block controller then read config to find out how it is configured.