One thing that is a must for me is a good set of wiper blades given the variety of inclement weather in our area.  Mind you, I'm putting these blades on a car that is what I call my fair weather car.  I'm not on the road with this particular car unless the weather promises to be reasonably good.  If you are in a particularly snowy area, you may wish to bypass this type of blade and head directly to winter blades.  These are touted as all weather, but simply trying to clear the existing snow on my windshield didn't appear to be as effective as snow blades on our truck.Installation is fairly simple and if you are unfamiliar with the blade setup on your vehicle, simply insert the information into the Amazon "Find Parts that fit your vehicle" and you'll be sure to get the proper fit.  Also, make sure you order from the same type of blade.  For example this one is ACDelco Clear Vision, but they offer other styles.  They may fit, but two different styles of blades could be problematic.  Some vehicles take two wipers of the same length, while other take two different ones.  The directions are inside the package and are in the form of one to eight step-by-step visuals.  The vehicle I purchased for takes two different lengths, one 19" and the other 21".WHAT'S IN THE PACKAGE:~  Wiper BladeAdapters:~  Top Lock Pinch Tab~  Top Lock Push Button~  Hook Lock~  Pin SideThere are a couple of points that I especially like about these blades, but the best one is the wear indicator.  Simply remove the tab before or after installation.  Blades should be replaced every six months, but unlike some things like oil, they can be easily forgotten.  My last set of blades was, should I say, quite sick looking because the previous owner of the car didn't take car of simple maintenance.  The other thing I liked was the tight mesh to my windshield from the more than "1500 pressure points."  I purchased one wiper blade and received the other one from the Vine program.  How well they perform in the long run and how well the wear indicator works remains to be seen.