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This article should help: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm

This article should help: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/what-is-soil-made-of-creating-a-good-garden-planting-soil-type.htm

I would suggest performing a local search in your area for retailers. If you need more info on tilling the garden, this article should help: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-till-a-garden-tilling-your-soil.htm

This usually depends on the soil quality you already have. However, whether planting flowers or veggies, all good soil needs to be well draining and fertile. One of the best ways to achieve good soil is through the addition of organic matter, such as compost. Here is an article that you may find helpful: https://www.gardeningknowhow.com/edible/vegetables/vgen/vegetable-garden-soil.htm

Here is a link to a table with various moisture levels required, it is a bit out of line for printing but has the readings: http://www.farmtek.com/wcsstore/EngineeringServices/allbizunits/techdocs/103399.pdf