Table salt contains potassium and iodide. Kosher salt is coarse-grained and free of additives that tend to cause pickling solutions to cloud. Sea salt is also coarse and along with kosher salt is more flavorful than table salt. Black salt is usually found in Indian markets and is strong in flavor and is more tan than black. Bamboo salt is sea salt roasted in bamboo and pickling salt, like kosher salt, is free of anti-caking additives that may cause pickling solutions to cloud.
Rock salt is inedible and primarily used to make ice cream.
There are also many herb and spice salts or seasonings that you can buy in the spice aisle of your local supermarket, as well as make at home. I've included some ideas to get you started, so take advantage of the many varieties of salts. After all, it's something your body needs to stay healthy and nutritionally balanced. Combine all the ingredients in a mortar and crush with a pestle until combined. Spoon into airtight containers for storage.