I don't think speedpainting will help me that much because i would still have to understand the ins and outs of the tools. I am currently using SAI but i got paint.net, Inkscape, and GIMP2... I could probably get photoshop if needed but i think photoshop would probably take the longest to learn.
You could pass some tutorials tho.. I'm still kinda understanding lineworks vs normal works in SAI.
Would also help if I could tell colors on some pics :D
I don't think speedpainting will help me that much because i would still have to understand the ins