We're so glad you're here. Your interest in and/or curiosity about soils means that you want to learn more. Let's start with a technical definition...
SOIL is the unconsolidated mineral and organic matter on the surface of the Earth that has been subjected to and shows effects of genetic and environmental factors of: climate and macro- & microorganisms, conditions by relief, acting on parent material over a period of time (USDA-NRCS). 
soil composed of organic and inorganic materials 
...but let's be honest. Soils are so much more than this. Soils are alive, they are beautiful, they are complex, they are life sustaining. Soils are kin and deserve our care and conservation. Together with my dear friend and colleague, Dr. Yamina Pressler, we created a crowd-sourced soils education website, For the love of soil - here you will find a wealth of soils information created and shared by many. 
Additional websites you might enjoy include: