How to create your first map
Don't try to convey too much in a single map. We find that early authors are too ambitious. Start small. You can always come back and expand it later.
Using the Designer, you can map out a basic path in a join-the-dots fashion. Create a few nodes that contain your main points and then build from there.
The Node editor functions like pretty much any text editor for a web page. You don't need to know HTML or fancy coding stuff. Just write what you want to say and add a few pictures.
Once you have a few nodes (or pages) linked together, fire up the Player and see how it will look to your learners.
Not much. A web browser, an Internet connection, and a free trial account on an OLab4 server.