Try searching on youtube or google for Manga Studio tutorials, or Clip Studio Paint (as the program is now known).

Here are a few:

General Introduction
Drawing
Inking
Coloring

Smith Micro on YouTube:

Manga Studio Webinars - https://www.youtube.com/playlist?lis...8ENP2-CP4Pu1Hy
Community Tutorials - https://www.youtube.com/playlist?lis...PFixWkVF56Hx0w
Manga Studio 5 & 5 EX Tutorials - https://www.youtube.com/playlist?lis...TXA-OWLJG3M-7p