Long story short there are basically two games. English and japanese versions. English version does not have as much content as jap so you are better off with the jap version (
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is the latest available). On top of that you must install
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. This will uncensor the game and add all sort of plugins that's you'll have to figure for yourself. They are usually enabled with the Fn keys (F2-F12). Also this will enable automated machine translation which isn't that great. To overcome the poor translation you need
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This way the main story and menus are translated by actual people while newer dlc are machine translated. Sometimes you might need to enable both english and jap subtitles in the settings if no text is displayed in the dialog. There are plenty (tons) of mods but in order to use some of them you will also need
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with all dlc to be installed which is a separate game that came before com3d2. Com3d2 must be linked to cm3d2 installation folder via com3d2 launcher settings for most mods to work. For everything else there are tutorials. So good luck because you'll need it. You'll spend most of the time in the menus, between loading screens and crashes. Generally you will want to use the LOhighpoly body for your maids because of the aditional shapekeys. You'll see what that means. Also make use of the yotogi slider plugin (F5)