Q.How To Plant Garlic?
I need to know how garlic is propagated, is it by seeds or by bulb and how to order for the seeds/bulbs.

Certified GKH Gardening Expert
Garlic is usually grown from cloves. You can get them at a garden center or by ordering from catalogs. Grocery store bulbs are often treated so as not to sprout. These articles should help:
https://extension.illinois.edu/blogs/good-growing/2019-09-17-growing-garlic
https://extension.oregonstate.edu/news/get-your-garlic-primer-planting-growing-harvesting
https://www.gardeningknowhow.com/edible/herbs/garlic/growing-garlic.htm
https://www.gardeningknowhow.com/edible/herbs/garlic/growing-store-bought-garlic.htm
https://www.gardeningknowhow.com/edible/herbs/garlic/how-to-grow-garlic-from-seed.htm