This workshop offers a broad introduction to ETFs. It also includes a discussion of passive (index) versus active (managed) investing, and compares their performance over the last 5 and 10 years.
In Canada, over 90% of actively managed funds underperformed their comparable index over a ten year period. See the SPIVA (S&P Index versus Active) report here:
ETFs originally focussed on index investing. However, today there is a wide variety of ETF styles, including actively managed and computer managed funds, region specific, country specific and sector specific funds.
The PowerPoint is here: