How to change bulb thats a t8 fluresent fixture in a home

A Lot of the T8 style have very little room to move the tubes around, check a few things:
See if you need to remove the tubes in a specific order,
See if the ends of the fixture are removable,
Instead of dropping both ends of the tube drop one side first,
Sometimes after the tube has been twisted and dropped slightly you may have to maneuver the pins to avoid the fixture.