New to Corel Painter X - Two questions - History menu & Brush realism

[Ashoka]

Background:

I just got a computer that has Corel Painter X installed.
In order to test its features, I also bought a Wacom Bamboo Fun Tablet.

Problem:

I cannot find a "history" menu in Corel Painter.
I'm referring to the type of history menu standard in Adobe Photoshop.
The closest thing I can find is the "Ctrl+Z" option to undo.

Most of Corel Painter's brushes seem to be circular.
In real life, most brushes are squarish or rectangular.
I have a couple of old Bob Ross shows.
He achieves many natural effects by dabbing the brush to create foliage or waves.
I can't find any brush that allows me to paint this way in Corel Painter.

Questions:

1) Does Corel Painter have any history menu?
Something like the history menu in Adobe Photoshop.

2) Are there tips or tutorials you can give me on achieving brush realism?
Brush tips that will allow the painting of natural elements (bushes, water, trees, etc.) using a Bob Ross type of tutorial.

Thanks for any tips or help!