I would like to know if there are any web sites that can break down and explain in simpler terms what Absolute Value, Dot Products etc mean in Geometry and also Trigonometry terms and there meanings ?
Your textbooks should explain these terms well enough. I'm sure there are illustrations there as well. Wikipedia explains the idea of the absolute value in this page:Absolute value - Wikipedia, the free encyclopedia
You can try searching for the others, too. Or ask specific questions in the forum.