Seriously, just play the game. While there are ways to get rich quick this is not what Stardew Valley is about. You are not missing out by taking your time. Its rather the opposite. You are missing out by rushing it.
This exactly, stardew guides the player to doing everything pretty well, the couple tips I would recommend doing are:
1. Checking out the big abandoned building that one of the npcs will show you a few days into playing, it'll guide you through most everything
2. watch the television, it has some useful information
3. Do what's fun for you, you can always do the stuff that isn't as fun later and there isn't any enjoyment in forcing yourself to do everything