I have found great value in studying the works and processes of other painters I admire. Below are links to various websites. Explore and profit! :)
I often paint standing, at an easel. I listen to music, and like to move around. I built it, using a camera tripod and some ingenuity. I have a blog post I wrote about the process, with many pics and explanations. Here's a link--
I can't take complete credit for the design though, which was cribbed from various other folks and cobbled together. I provide links in my blog post, in the hopes that it might inform others.
I use a lot of squirrel hair mops, as well as some synthetic brushes. The mops hold a great deal of water and make washes very easy. The bristles are also very flexible and "expressive" (aka, "floppy"), but also can come to a fine point. I sometimes get questions about them, in particular the Needle point squirrel hair brush I use for details and line work.
That brush is from Alvaro Castagnet. Here's a link to it. I've not found anything else that quite works like it. Gotta love that brush!