Rachel McCollin is director at Compass Design (http://compass-design.co.uk/). She has been developing WordPress sites, including mobile sites, since early 2010. She has spoken on this topic at WordCamp, written articles and blogged about it.Rachel has developed a reputation in the UK WordPress community as an expert on the topic. She has experience building mobile WordPress sites for a variety of clients and has written tutorials on technical subjects. Tessa Blakeley Silver's background is in print design and traditional illustration. She evolved over the years into web and multi-media development, where she focuses on usability and interface design. Prior to starting her consulting and development company hyper3media (pronounced hyper-cube media) http://hyper3media.com, Tessa was the VP of Interactive Technologies at eHigherEducation, an online learning and technology company developing compelling multimedia simulations, interactions, and games that met online educational requirements like 508, AICC, and SCORM. She has also worked as a consultant and freelancer for J. Walter Thompson and The Diamond Trading Company (formerly known as DeBeers) and was a Design Specialist and Senior Associate for PricewaterhouseCoopers' East Region Marketing department. Tessa authors several design and web technology blogs. Joomla! Template Design is her first book.