Nevermind being in a hurry, it sounds like you're very physically active with the landscaping and (presumably) training. As for a starting point, start with whatever you're currently eating, track your morning bodyweight (after bathroom/before food), and adjust as necessary.
You do it by doing it. It takes time, effort, and some mental energy, but not putting work into the nutrition side of things is where most guys screw up.
Even if you track food for just a few days, writing what/how much/when you eat and then spend an hour sitting down to run the numbers on it all, you'll eventually be able to eyeball things and see that "this much" meat is a "this much" protein and "that much" oatmeal is "that many" carbs, four eggs equals "X" total calories, protein, and fat, etc.