I honestly suggest finding someone with similar goals to you, and check out their own journey through youtube, social media, instagram, or even follow a few threads on here! It has honestly worked wonders for me.
The threads on here have a crazy amount of free information from everyone from pro bodybuilders to record setting powerlifters. Just stroll around.
As for nutrition, there are obviously a billion different opinions on shit, but its honestly not that hard. I would find the T-Nation article "The Simple Diet" extremely easy rules to follow that will put you on the path to A). find what works for you and B). have a set of rules to get your nutrition in order. I know from experience that it works.