Find a table of derivatives and copy it onto the lhs of a sheet of paper.
For each row of the table write a corresponding statement about integrals on the rhs. For example, if one of the rows starts:
\[ \begin{align}
\frac{d}{dx} \ \tan x &= \sec^2 x
\end{align} \]
to the right of this write
\[ \begin{align}
\int \sec^2 x dx &= \tan x + c
\end{align} \]
Do this for at least 10 examples.