The important thing is that we're getting this stuff by thinking of chords first and not scales! Scales will happen anyway when you start looking for ways to connect the chord tones. (When you start to get really good at this, you'll realize that there's really just one scale - the chromatic scale, of which you can use as much or as little as you choose.) Your ears should tell you what does and doesn't sound good. Use them as much as possible! Eventually, you'll learn lots of scale names and possibilities for all kinds of chords. That stuff is in lots of books; just about anyone can read them. But your ears and your taste are what will make you sound different from anyone else, and you won't get that from any book. Some of the greatest players (Django, Charlie Christian, Wes Montgomery) had little or no theoretical knowledge, but they had incredible ears and artistic vision. The rest of us need a little help from theory, but we need to keep it in perspective: music theory is mostly about figuring out why something worked!