My story is a little strange, but I never tried anything else, than all grain and I never made an already existing recipe.
One day two and a half years ago I woke up, find I have two weeks of free time (it was spring break on my university) and decided i want to learn how to brew beer.
Downloaded some e-books, learnt some thing, I decided I want to start with all-grain or nothing and I want to brew my own recipies.
My first beer was an Irish Red Ale and lucky me, it turned out great! I haven't even used sanitization back than!
Sinc then I brew my own designes and they are mostly really good (39/44 were good since than).
I have learnt a few more things, now use sanitization and changed my equipment to make bigger batches.
So for me, big ambitions and a lucky start.