What do you mean by "online publishing." That's a pretty big issue. If you intend to operate a business in Texas, there are certainly taxation issues as well as business licenses. Further, if you are a Canadian, there are certaily cross border issues with running a US business from there (or immigration issues if you plan to move to TX). With a publishing business, there's also likely copyright issues you need to concern yourself with. This is much more than we can possibly answer in a forum (especially given the vague question).