A quick general outline:
- define the overall structure of your site (main pages and children if necessary), create a folder for each page
- define the structure for each page (use fields to break down content into smaller parts)
- once that is set, create the blueprints for the Panel with those fields (where the editors will later edit the content), pages that require different sets of fields will usually get different blueprints
- create the templates for these different kind of pages. Templates define the HTML markup for your pages
- style with CSS
- come back to the forum with more specific questions
The most important part is planning ahead, rather than just jumping in.
Edit: On a side note: It’s ok to get inspired by what other people are creating, but I wouldn’t copy other peoples’ designs.