I recently learned of rabatment of the rectangle [2], lead room [3] and head room [4].
What other "rules" of photography or modern hacks do you find worthy of adding to your repertoire?
[0] https://en.wikipedia.org/wiki/Rule_of_thirds
[1] https://en.wikipedia.org/wiki/Golden_ratio
[2] https://en.wikipedia.org/wiki/Rabatment_of_the_rectangle
[3] https://en.wikipedia.org/wiki/Lead_room
[4] https://en.wikipedia.org/wiki/Headroom_(photographic_framing)
1. Composition matters. Alot. Move yourself,your camera, and your subjects around.
2. Control your light naturally. Pay attention to directionality of light, shadows and softness. You can cover a light with your body or change directions.
3. Slow down and take your time. Imagine your shooting film, make the shots count.
Using these techniques, I stopped carrying my DSLR and only shoot with my phone. The photos from the phone have far higher quality and value since I have it in my pocket at all times. Making "capturing the moment" a very accessible thing.
Always take two exposures, if you have time to do so
Take n times as many photos, throw n-1 away, and you'll be n times better, where n is 2 or more.
Share your photos on Flickr or some other social network to get feedback, if you can.
The best camera to have, is one you have with you.