The IMF (International Monetary Fund) have created an 8-weeks long course about public financial management. It is free, and available to you whether you work in a government agency, an NGO or are just interested in public money and budget transparency.
They have produced a 2-minute introductory video.
And you can sign up for the course here if you are a government official or work for a development agency and here if you are a member of the public. I think I will sign up because we can all learn something new however much of an expert we think we are.