infoaddict is a zip file, you end up with a folder full of stuff. Place the folder in the Documents>Aspyr>Side Meier's Civilization>MODS folder path.
Start the game, select MODS, then Accept (the legalese), then BROWSE MODS, make sure to highlight the green button next to Infoaddict, then click back, click Single Player and load/setup the game to your preferences.
Infoaddict will be seen as a choice at the bottom of the pull down list that includes the different 'Overviews' and the Notifications Log.