I've had my Saxophone for almost four years now (since 8th grade) and just found out a little while back that I need yearly mainmaintenance and my Corking is starting to come off of the Neck because I never looked up alternatives to cork grease nor do I have much money for cork grease to buy a tube so often through out the Year (I recently bought some this school year and it's lasted) but now when I realized that the exterior is still polished my problem is that the interior has water stains because I don't have something to clean out the Water, the keys stick (due to never having maintenance) and I was wondering if anybody had any ideas what I could do to help put it it in a condition to where it looks like it's never been used a list of what I need and where to get the interior cleaned and the whole instrument maintained would help

Thanks