Parking Pass annual

I am really new to squarespace. I am a CS major but only use Java, Python and Assembly. I am supposed to be making a site for our parking passes. These parking passes are for our school's football games.

How this should work: There are separate passes for each game day. There are 3 separate lots all with the same price (for now). The user should be able to pay for a singular day, multiple or buy the spot for the whole season. The season pass is cheaper than each individual spot. These spots should be numbered so that people can buy more than one and park next to friends for tailgating. I have no idea how to begin doing this and I assume it can only be done with code. Does anyone have any suggestions?