It's amazing to think that under our flesh, inside the tissue, down past a cellular level, looking at smaller and smaller particles, eventually you come to nothing more than vibrations. All matter, all things in the universe, they all break down to nothing but a lot of vibrations.
In Wicca, it's important to learn to raise, direct and contain energy. That first comes with learning how to sense energy. This is an essential first step in Wiccan training, or training in any esoteric religion such as ours.
Learning to sense energy is a major stepping stone.
My Tip for You Today: Practice sensing energy. Grab something-- a plant, a friend, a pet. Relax, close your eyes, go into a semi-meditative state and hold your hands out.
Hold your hand over the object and let your senses pick something up. You may feel heat, coolness, tingling, radiating-- different things are going to give off different kinds of vibrations. So keep practicing with lots of different things.
You might want to try some of the exercises found here: Wicca for Beginners: Energy Manipulation Exercises with Crystals