If you're new then you need to learn your basics.
*Belief in yourself and your abilities
*Circle Casting and Releasing
*Correspondences (colors, days, lunar phases, etc)
As for elemental magic, there is a coven in the groups section dedicated to that particular topic. The coven being name Elemental Magick, go to the groups menu then scroll down until you see the link to the coven. Click on it and then click apply to the coven.
"Blessed Be" is the shortened form of a Pagan greeting or farewell. However, as time passed it was shorted to "Blessed Be" but it still implies the full greeting/farewell.
It depends on who you ask. I personally, like many others believe that whatever energy you send out will be sent back to you threefold. Others believe that there are no consequences. Either way, I would caution you to be careful with the type of spells you cast and how you use magic.
Magic is the natural energy in the world around us. We tap into that energy when we cast spells and perform other forms of magic. However, this energy is also often viewed as a gift from our deities.