On martinus.dk you will find several online learning resources. You can read parts of Martinus’ books and several articles online, see his symbols and find out more about Martinus’ life and works. There are also several introductory video films.
On kosmosmagazine.net you can read the digital editions of the magazine Kosmos. On Martinus Institute’s YouTube channel there are also several introductory films about Martinus’ symbols.
Dansk 
English (UK) 
Svenska