Start with Mild, because it is basically DIld without the randomness. Once you become alright and get a feel for things you can experiment with different tehcniques like Deild and Wild variations etc. All the techniques like Ada or Sat work equaally well so it doesn't matter which you pick.
I suggest you write down everything you find important in you diary in one big article. That is how I eventually got around to writing my guide, by collecting all different pieces of relevant pieces of info to build my own variation and style to the technique.