Keeping a worm farm is an easy project
Worm castings -- AKA poop -- add valuable nutrients to the soil and is easy to make. The hardest part is making the bin and that's not difficult.
A productive alfalfa crop removes significant quantities of macronutrients and small amounts of micronutrients from the soil (Table 1). A complete fertilizer program is essential to ensure a highly productive, long-lived stand.
Don't forget the trellis when you plant beer's necessary ingredient