OK, so in the next few months I want to open my own business selling stuff that I will get from China. I am wondering what license(s) I'll need or what 'red tape' I'll have to go through. I won't have a storefront, will operate as a traveling salesman, from my apt, and meet clients at their residence.

I live in PA, and the only thing I know I will need is a sales tax license.. I won't have any employees.. at least not at first.. what else will I need? a resell license or something? Please advise, thanks you.