Hello Carla welcome here you will find many knowledgeable people that can help a great deal. Remember be courteous some folks don't some do. But for most do. Safety is another issue I can't stress enough one important word Glasses !!! Get yourself a pair or two or three. Building lasers is a great thing. Don't abuse the power of these they are there for our enjoyment of the light spectrum. Many beautiful colors. So have a great time here and be safe.