View attachment 139916
So ... how to level up?
When using computer at home or in your own office (after you have been promoted)
You have the opportunity to do research.
Once you reach a new level, you get a message that you can now spend a skill point.
To use skill points just click on the phone icon in the upper the right corner and select the research tab -> the one in the screenshot.
Now you can spend the skill point on any skill that has a description on it.
The others without a description are not implemented yet.
The screenshot shows how it looks like when you spend all skillpoints on the current avaible skills:
Not everything on the research screen is available to the current version yet.
All the grey buttons in the following picture have not been implemented yet.