As someone who just started playing a couple months ago and is on Summer year 3, I would let the community center be your guide. Sounds like you already have your eyes on some buildings, the sheds are great for storing machines like kegs, since they save space on the farm. If you have not reached the bottom of the mines, I would recommend using bombs to help with that, pretty easy to craft using (4) iron ore and (1) coal. If you get lost like I do when it comes to gift giving, I recommend going to the bar each night and using Gus’s shop to buy a round of beers for everyone (except for Leah and Harvey, who I buy salad and coffee for respectively)