Whatever the retail value of your grandfather's collection might be its best home remains with your current and future family members if at all possible. We are all just the trustees of what treasures we own today.
Collecting for the enjoyment of collecting, whatever that might be, is the name of the game. Don't hesitate to ask questions especially if you need basic information and especially more advanced sources of information for any possible topic. You should be able to find folks on this board a little further along on their collecting journey glad to share experiences. Russ