Thread:Project:Support desk/MediaWiki how-to or any other manual

Hello, I install new version of mediawiki ingine - 1.20.02 version. I wanna do anything with it. But I can`t because I`m newbie on it. When I try to find any info about mediawiki I search only old articles about old versions, such as 1.19 or 1.18. How I can understand, the syntax of LocalSettings.php file was changed. I can`t find any new info about new engine. Can you give any links for new HOW-TO`s or manual for latests version of engine?