There is a kde program called Kile that you might consider using. I believe that the title is an acronym for KDE Interactive Latex Environment.

It has wizards, plus a Latex reference.

Is this close to what you are trying to do?

\begin{array}{ccc}

\begin{tabular}{|c|}\caption{table1} \\

\hline entry a \\

\hline entry b \\

\hline entry c \\

\hline entry d \\

\hline entry e \\

\hline

\end{tabular} & \begin{tabular}{|c|}\caption{table2} \\

\hline entry 1 \\

\hline entry 2 \\

\hline entry 3 \\

\hline entry 4 \\

\hline entry 5 \\

\hline

\end{tabular} & \begin{tabular}{|c|}\caption{table3} \\

\hline entry 6 \\

\hline entry 7 \\

\hline entry 8 \\

\hline entry 9 \\

\hline entry 10 \\

\hline

\end{tabular}

\end{array}

Also, there is a web site

www.ctan.org ( Comprehensive Tex Archive Network ) that has references to many manuals and resources for latex. Kile probably comes with your Linux distribution, or you could google for their home page.