I have been making websites built on Wordpress, Drupal and Joomla for a number of years now. I am a service provider for Envato Studio's 'Express Wordpress / Drupal / Joomla Installation' services which means that I am regularly installing Themeforest themes for these systems and setting them up with the supplied demo content. I have done more than 300 of these jobs, so if you need help with this I'd be happy to help you out. I also offer a range of basic services for Wordpress, Drupal and Joomla.
I might be able to help you with some light Wordpress customisations, however for more complex PHP customisations and full website development jobs I would refer you to the Wordpress Customisation section:
Hope to hear from you. Drop me a line!