Title says it all. Loving the game but feel like it needs more to it

I completed a few tasks on the left when you go into your history sell window by pressing O on your keyboard. It says that I do not own a store for me to do those tasks. Has anyone figured out how to own a store? Or is that possible?

i just dont understand the process if anyone can help that would be great :D

I bought the Trimmer L and the Pollinator L, but if i put Weed in and use the ON-Button, it doesn't make something. What the Trick with this two Items?

i just got the game and tried to start. i went to the mail box grabbed the stuff went to room to place growbox but can not get the inventory to open to grab the tent to place. am i missing something. edit: it opened after i went back to game from writting this does the inventory just take forever to load...