Start with a template
You are building a site in HTML5 but your not sure where to start. Start here.
Watch the video.
It’s 40 minutes long and a bit slow at places but suffer through it as it is well worth your time. The talk on CSS and .htaccess is worth its weight in gold.
I also like this link (there are a lot of other useful links too):
Hope you learn from it,
Ok, this is a lot of information but this resource is a great place to get started on writing