Adding a category feature

[saucesaft]

Firstly, thank you for this great theme, it is awesome and i am using it for my blog.
I would like to implement a type of category feature for the blog posts, for example creating a blog post and adding categories as "Tutorial" or "Python", and people could see all the blogs containing a certain category. Will it be possible to add that feature to this theme? I'll be willing to help in this feature, I know Python and a little bit of HTML.

Thanks!