Table and Figure

Prevent latex from putting figure in the center of a last page

Try this in the preamble

\makeatletter
\setlength{\@fptop}{0pt}
\makeatother

Adjust 0pt if the space is too tight

Resize oversized table/figure to fit page

\resizebox{0.9\textwidth}{!}{
\begin{tabular}{llll}
\end{tabular}

}

Reduce space between columns

\begin{table}
\renewcommmand{\tabcolsep}{0.1cm}