Where do you get items in metal gear solid 2

You start out with a hand full and some are given to by other character as you progress through the game, however, most items are sprawled out throughout the game and you have to find them. Your support (people you contact on the codec) will tell you where immediately important are. But remember a rule of thumb with videogames: they reward exploration. Most of the items you can find on strut F(?); the warehouse.