It is usually pretty hard to find free tutorials from quality & well-known Instagrammers, so you should really check this video out. @andrewtkearns is another one of my favourite photographers on Instagram. His soft tones and edits are something I really aspire to achieving.
He recently hit the roads in his Prius and the plan is to travel around America and live out of his car for a year. He started vlogging too and is pretty promising, so give his YouTube channel a little browse.