Comment on Tutorial: Painting by Celsa
Hello, I'm glad it's being useful 
About your questions, sadly I don't use Photoshop for painting. Right now I use Paint Tool SAI, though the tutorial was done using Corel Painter. I'd rather recommend one of this to paint, and leave Photoshop for editing, but it's up to you.
About resolution and size, it really depends what will you use the art for, but I like to set them up big so they can be used for net graphics or printing. I usually set the canvas in A3 (I don't remember the exact size, but I know it's near 5000px x 3500px or so)
300dpi resolution should be enough, though I prefer to scan sketches at 600dpi and resize. For color scanning I prefer 1200dpi and resize, so it doesn't loses much quality.
I hope this helped.
About your questions, sadly I don't use Photoshop for painting. Right now I use Paint Tool SAI, though the tutorial was done using Corel Painter. I'd rather recommend one of this to paint, and leave Photoshop for editing, but it's up to you.
About resolution and size, it really depends what will you use the art for, but I like to set them up big so they can be used for net graphics or printing. I usually set the canvas in A3 (I don't remember the exact size, but I know it's near 5000px x 3500px or so)
300dpi resolution should be enough, though I prefer to scan sketches at 600dpi and resize. For color scanning I prefer 1200dpi and resize, so it doesn't loses much quality.
I hope this helped.
This helps so much! Thank you for taking the time to reply, I really appreciate it!