If you haven't viewed the general links I posted on another pages, view the videos below to see the type of information on offer.  Remember - IT'S FREE, so why wouldn't you??

Exposure Compensation

Try a 15 Minute challenge yourself and see what you get.  It really makes you think about what is available in such a short space of time. 

Here is an example from Froknowsphoto.com but there are man more on the main Fro site.

I strongly advise you to subscride to both photographers YouTube channels.