One
The Power Rule
It shouldn't take you long to work power rule problems of all types.
Two
Exponentials and Logarithms
There are only a few functions to deal with so get some practice with all of them.
Three
Trigonometric Functions
Test whether you have actually memorized all of these derivatives so you're not overconfident.
Four
Sum Rule and Constant Multiples
The easiest rule in Calculus is the sum rule so make sure you understand it.
Five
Product Rule
Products are not as nice as sums, so spend some time practicing how to keep track of all the functions.
Six
Quotient Rule
The more quotient rule problems you work the more natural it will be and you won't have to second guess your memory.
Seven
Chain Rule
The chain rule needs to be explored with practice so get to work on it right now.