I have been coding HTML, CSS, PHP, and MySQL for over eight years (more like twelve for HTML/CSS), but only as an enthusiast. I have created projects for myself and for friends, but not professionally, so although I am now just beginning to freelance, I've been working with the Web for many years.
Additionally, I have a BA in English Literature from U.C. Berkeley and a certificate from The Technical and Professional Writing Program from S.F. State and so can also offer writing and editing services.
HTML/CSS are used for the structure and style of a web page, though CSS is also used for much more.
LESS is a more programmatic way of writing CSS that people like me really appreciate.
PHP is the most common server-side language on the Web. It runs on the web host's server and is used primarily to manage data in a database: adding, updating, retrieving for display.
MySQL is the most common database on the Web.
WordPress is the most commonly used content management system (CMS) on the Web. A content management system allows the site owner to create new pages, post content and images, manage menus, and much more.