I will teach you the basic melt and poor soap method in your own kitchen.
Some Basic Imformation.
Your mold can be any kind as long as it can handle the heat that your melted soap makes.
Your fragrance can be an essential oil or fragrance oil. The difference is that essential oils or all natural, so the fragrances or limited as they only come from plants in nature. For example you can get vanilla in this oil. The Fragrance oils come in many smells as they are not organic. For example you can get chocolate chip in this oil.
Your soap base can come in many varieties from the basic glycerin base to goat’s milk base. If you really want your soap to be extra good for your skin get something other then glycerin base.
Your colorant has to be soap coloring not food coloring as food coloring will fade over time.
Additives are stuff like skin safe herbs or spices. There is no limit to what you can create with additives.
All this stuff you can get online and some at your local craft store.