I started out with exploration, naturally, all I knew is what I had read. My very first all grain brew turned out amazing, although it had almost no hop bitter at all it didn't really need it being a brown ale. I experimented with mashing techniques, changing the temp, and using slight variations of the same recipe. Number 1 and 4 turned out great so I took what I learned from exploring ingredients and mash temps and went from there. It was time to do what I did well; with new more straight forwards malt recipes. I made a few darker beers, changing only the dark malts amount. then once I found the level I liked it wasnt really about xploring more than refining a recipe. I have 1 solid malt recipe. Now I have brewing a lighter IPA style ale and using 1 type of hops in each, but the same grain recipe that was a standard IPA. long story short I say exploring always comes first unless you go by the book.