Working on a website

Yes, this one. I have some ideas, but I think I might need a guide or something. Draw what and where I want things on the website. Like a mindmap.
Or maybe I don't need something like that and just go with the flow. 

About this blog section, I was wondering what to put here. Right now I'm thinking of interesting tidbits I found during my research for scenes, locations, characters or species. Or an interesting concept I read about in a book or article; or saw in a TV show. Would you be interested in those kind of posts?