Me again..

thinking about filters. i have a 28-90mm lens. i have no idea how to pick a filter.

can you all give some filter examples of what you like to use and the pro's about them?

how do i know if the filter is made for my lens?

i'm shooting 98% B&W for my class if that makes a different (tho I did just get a few rolls of color for this weekend :thumbsup: )

many thanks,
ilene