Yes, old Florida trick. Clean the "seed"/pit...identify the top from the bottom. insert "4" wooden toothpicks, not too deep, so it can straddle a standard "rocks" glass, does not have to be a tall glass.
Fill glass with good water until it just gets the bottom half of the seed submerged. Keep the water level consistent, and rotate from time to time. So it doesn't get cloudy or stagnant.
Roots will develop within a couple weeks or so. Keep in a shady place, no direct sun on seed. The roots will continue to grown in the glass, and eventually the seed will "split" open. When it does this, place in well drained sand, garden soil mix, in a clay pot to establish.
Plant the seed on top of the soil, not completely buried.
Keep in part sun part shade, keep damp but allow to drain, they sprout quickly, get citrus fertilizer at Home Depot, garden center,... Keep replanting in larger and larger pots, until it can stand on its own, perhaps with a stick support. Choose your locale carefully. Desert, arid areas, can be tough, without some thought.
OBTW, It takes SEVEN years to bear fruit..... Mine is 4-5 feet tall after two years.
Good luck, Patience grasshopper...
