ADA Compliant Web sites

Do you have any recommendations / suggestions as to how I can make an Enfold Website ADA compliant. I know about alt text and description stuff, but how to I make say contact form ADA compliant. Where do I edit the codes??? I have never done this before and it is throwing me for a loop. Also Woo Ecommerce pages…have issues.
When form controls are text input fields use the LABEL element
When text is not available use the title attribute
Include any special instructions within field labels
Make sure that form fields are in a logical tab order
Include a ‘Skip Navigation’ button to help those using text readers

Provide a means of skipping past repetitive navigation links.
What:
Navigation links are the lists or “menus” of links to all the sections of a site that are often repeated on every page.
Why:
Because navigation links are typically placed at the beginning (top left) of pages, screen reader users must read through all the navigation links before reaching the main area of the page. Individuals who use a keyboard instead of a mouse similarly must tab through all the navigation links before reaching the main area of the page. Providing a means of skipping these links can significantly improve efficiency and usability for screen reader and keyboard users.
How:Provide a link at the beginning of navigation lists that points to a target at the beginning of the main content area of the page. This link must be visible to screen reader and keyboard users, but can be hidden from other users, e.g.:
<style type=”text/css”>
a.skipnavigation { position: absolute; left: -10000px; }
a.skipnavigation:focus, a.skipnavigation:active { position: static; left: 0; }
</style>
Skip to Content

Where would I put this kind of code?