Technical upgrades

I added a list of links to books in the right hand margin. I'll add books there whenever I write about them, so they are always easy to find. After all, this blog is supposed to help others following my path. So far it's been paved with books, and more are soon to come!

I also added a handy-dandy subscription tool, so all the people reading my blog (read: my dad) can get the latest post without having to check the blog.