Clark County Tax Sale

I have a small company that has just begun. I'm not sure what to charge for taxes?

I have a small company that has just begun. I can edit and duplicate old videos to digital formats. I work outside my house and leave in the morning. I Shipp across the country and local business. What load i for sales tax? Both local and when i ship. Besides, I can collect taxes on labor rates are only the materials? Please help, I'm so confused living in the state of Washington, Clark County, but outside the city limits of Vancouver. ..

This is a site that has been imposed on All sales cities: http://dor.wa.gov/docs/forms/excstx/locsalusetx/localslsuseflyer_quarterly.pdf