When I teach the "Basic Photography Course", I find that the most confusing part to most beginners are the impact f-stop, ISO and shutter speed have on their photography. I can't really blame them, I myself was a little confused in the beginning, so why don't they? 

I came across the below illustration, which I thought is very useful for all those who panic every time they try to fiddle with their cameras, trying to figure out what does what and why. I hope you find it useful. 

If you are still not sure about anything, or feel you need a little more explanation, feel free to get in touch with me and ask away. I'm more than happy to answer any questions you might have. Otherwise, hit me up on one of the social media outlets and post your question there, this way others can also benefit. Good luck!

Illustration source: Fotoblog Hamburg