Outline
Summary
noun
An approximation of what we need is my outline / summary.
がいよう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
青年海外協力隊についての概要は、こちらのページでお読み頂けます。
You can read an outline of the Japanese Peace Corps on this page.