Do anyone know of any good write ups on the different kind of filters and its uses?
wikipedia has a basic one, but it will not spoonfeed you entirely either
i.e. it will tell you what a filter does, but it won't tell you like "if sunny and very bright, please use nd filter if shooting towards the sun with large aperture." for something much more comprehensive and consolidated, why not go straight to the source? hoya has a website which tells you what you can use each filter for.