The Kingston Field Naturalists (KFN) has recently put online a workshop on blue-green algae (BGA). It was made by a KFN member and two Queens students and consists of two videos on YouTube. The first covers mainly research into BGA and runs for 53 minutes, and the second deals with identifying different cyanobacteria and runs for 20 minutes.
These are particularly relevant as they cover research carried out at Queens on nearby Dog Lake. Some of the content is quite technical, but there is a lot to learn if you are interested.
The videos are: