the use of gobos in your images, love the shadows they cast on the model and background.
great depth of field and aperture photography tutorial
ISO - if I could only remember this!
Portraits mit Schleier
Photography tips for beginners
Shutter Speed: an overview | Boost Your Photography
Colored Lens Filter DIY! Super easy and fun way to add a colored film feel to your photographs!
Rule of thirds tips in photography
It's like changing the pupil of your eye to a shape other than a circle, and that controls how the light enters your eye (or lens in a camera), and how you perceive it! So cool! Learned something similar in my science class
Double exposure photoshop. Love the way this looks.