Hi! I have taken one year in calculus so far in high school( AP calculus AB) and I am signed up to take BC calculus next year. However, I would like to work on some calculus over the summer to be able to breeze through the material during the year so that I can move on to higher math. I bought Spivak's calculus already but I think that I need something less abstract and with more practice problems, while at the same time covering any material I would learn in BC. Any recommendations? Thanks in advance!