Post completing a Psychology degree I've found myself in a health-tech startup acting as Research and Development Manager. As there's only three of us in the team, we have hybrid roles and as a result I've been engaging and leading projects somewhat. 

I enjoy working in the start-up scene and like the way 'agile' works but wonder do I need a prince background to further my [lack of] understanding? Or would a Agile course (Please link me to one?) be better?

I'm self funding this which sucks but I think is something which should be taken into account.