Hi Michael. two questions 1. The google adwords, can I create an account without billing information. I do not really want to be billed for anything, is there a way around that? 2. The on-page optimization is focused on HTML structure. What about PHP?
You only get billed when you actually launch a campaign. If you want to use the tools, they are free but an account, including billing information must be entered. With regard to your second question, whether a site is built in php or html, optimization techniques are the same. Focus on well structured meta data (title tags, descriptions, etc.) and creating a site that users can navigate easily and responds quickly on mobile devices.
Thanks so much