...The most important concept you should know for Calc 1 is the limit. What's the limit as x approaches infinity of (5x + 3)/(6x - 1)?
Calc 2: integrals. You already know how to find the area under the graph of the line y = 2x + 3 between 0 and 1; just draw the graph, shade in the trapezoid, and use geometry. (read more)