How to make/save brushes
This is a photoshop tutorial for how to make/save brushes from an imagepack.
1. Open up your imagepack and press the lasso tool

(or press
L on your keyboard).
2. Make an outline of your desired brush like this:
3. Click on
Edit, then
Define Brush Preset.... Name your brush.
You have now achieved on making/saving a brush on Photoshop. You can repeat this for your other brushes.
You can find your new brush by clicking the brush tool

and then pressing
F5 on your keyboard.