I've taken pre calculus twice (highschool, and then college), now I've started Calculus 1 and things aren't clicking :(. Plz Help

Hi guys I was wondering if you guys could give me tips, websites, and videos to help me in calculus. ANYTHING will help thx. Right now we are looking at how to find limits, things are coming to , me slowly as I am a slow learner, but I'm still trying to grasp the concept of wtf am I doing, and why am I doing this.