Business Catalyst Websites

I need assistance with implementing a Business Catalyst website in particular with the following items: Customise the layout of System Emails and Newsletters. Add code that allows it to differentiate customers location and apply tax to checkout/paypal accordingly. Show me how to use BC to create categories in a directory (currently using a web app for directory, but do not know how to breakdown into different groups and how to display the results. I need someone that is very experienced in all aspects of Business Catalyst. I have several other projects in the works, and need someone I can work with in the future as required.