Click on the brushes below for an example and explanation of what I use it for, & their settings if you want to recreate them in another program:
A brush with no anti-aliasing, named after Paint Tool SAI's binary pen. Also equivalent to the photoshop pencil tool.
To recreate this in another program, just disable everything except pen pressure for brush size. Make sure the edge is set to hard, and the anti-alias is disabled so you have a sharp pixelled edge. Most programs will already have this brush available.
Same as the binary pen, but this time the brush tip is a rectangle that randomly rotates, creating a roughened edge. I use this primarily for background elements and as a base for foliage - it's great for creating a roughened edge. I also use it for sketching sometimes - typically thumbnails, as its roughness and lack of control means it's not suited to fine detail. So good for rough work.
The process for creating this brush in another program is much the same as the binary pen, but you want to use a rectangular shaped brush and have it rotate a little. If your program can't randomise rotation, try randomising the size for a similar effect. SAI users, try fuzzy static maybe?
As the name suggests, I use this to add texture to my art. It's just an airbrush with a texture applied to it, I will lightly airbrush in a new colour on top of what I have to add a slight texture to my work. I also use this for gradients.
To recreate this in another program, just create a large very soft brush with a texture on it.
A flat tipped brush with a paper texture applied to it. This is just my sketching brush. I don't use it much these days in favour of my lineless work, but when I do use it the only thing to note is I work about 3x larger than my actual output size.
To recreate it, just create a brush with a slim oval or rectangular tip, and apply a paper texture to it. It has a minimum size of about 40%, and the brush density (also called flow in photoshop) is controlled by the pressure. In CSP it actually uses the regular circle brush tip, but I've set the thickness to about 15% so it's squished into an oval!
These are the leaf brushes linked above, but for each of them I have disabled the anti-aliasing and the pressure control on the brush density! This is just to make them match my binary pen settings.
Increasing the brush size will increase how widely the leaves spread, while increasing the particle size will increase the size of the leaves themselves.
To recreate them in another program, you just want to create some leaf-ish shapes and have the brush randomly cycle through them and scatter them about.
I use this one rather sparingly around the edges of foliage, just to add the impression of branches! As per the other leaf brushes, the size of the leaves is controlled by the particle size, not the brush size itself.
Also do note: it flows in the direction of your brush stroke!
Modified from まくわうに's かすれた感じの水彩 (faint watercolour) brush, to be a bit more of a thick paint.
I made these modifications (including fixing the brush tip material to greyscale so csp can recolour it correctly) to create something akin to the brushes used in breath of the wild's artwork.
However, I have recently taken to using it to add a little texture to my binary art. Tip: I have enable/disable colour mixing set to a shortcut (c key), and turn it on and off depending on my needs.
Modified from まくわうに's かすれた感じの水彩 (faint watercolour) brush, to be a very dry, texture brush.
You'll get this kind of grunge from the paint brush if you have colour mixing disabled and you press very lightly - however it's easier to just have it in a separate brush.