Advice on very simple project for newbie please.

I'm looking to create a very simple project as follows:

Using a VB NET project I want to switch on/off some leds.
I want the possibility of red, green or none.

What part of this are you having issues with?

Needs to be visible 5m across a normal office space.
Should have 360 degree visibility

This is a matter of proper LED selection and positioning.

I have a UNO board here but have no idea how to progress.. I don't really want to have to learn a lot

That attitude is not going to get you very far.