That's because, honestly, farming is complex as hell and cutting grass or feeding a cow is a multi-step process requiring a bunch of different machinery that usually needs to be connected and pulled by another piece of machinery. And it's not like these machines are called GrassMaster X1 or Cow-Feeder 9000. Clicking and scrolling through menus while peering at hulking masses of shiny metal and spinning blades with names like Claas Jaguar 960 Terra Trac or Case IH Autostoft 8800 Multi-Row, it's hard to know where to look for what you need even when you know what you need. There's a pretty extensive in-game help menu that lays out the broad strokes of how to do a farming thing (which will then let you do another thing, then another thing, and eventually the thing you actually want to do), but very little of it is intuitive for a beginner.