Buying a truck for a single woman can be stressful.  It does not need to be, however, if you do your research before going to the dealer.  Since the accident last month and the rain turning my road into a quagmire, it has become painfully obvious I needed to look into buying a truck for the homestead.  I did some research on styles, (I favor Dodges), what accessories I wanted on it, plus it had to be a 4 Wheel Drive because winter is fast approaching, and while the BUICK often acts like a large pickup by hauling construction supplies,etc, I can't drive the BUICK through the pasture to pick up the wood cut for the wood stove.
I went to a dealership about an hour away after looking at several dealerships and their inventory online.  I knew the year range, make types, and accessories that should be available on each one.  I also had researched price on Edmonds.com, true car.com, and Kelley blue book online.  I also knew what payment range I needed to stay in, and what down payment I could afford since I do not intend to get rid of my BUICK.
The secret ladies, is to know your information before you step on the lot. Realize your are there to buy a vehicle to serve you rue needs, ie:mechanically sound, lots of tread on the tire.....beauty of the vehicle comes secondary, though salesmen will still try to get you looking at that angle simply because you are female.
I did purchase a truck, a 2009 Dodge Ram pickup, 4wd, with a tow package.  My truck is only a half ton, so I can only haul about 10,000 lbs safely.  I made sure that it was mechanically sound, and took it for a test drive before sitting down to talk numbers.
When you get to negotiations, be firm on your price.  They will not meet your price at first...or second, or third.  Keep In mind, it is your finances, and don't allow them to tell you your offer is cutting their profit too short.  They don't sell for free, but they have plenty of room available.  If possible, have your financing already pre-authorized through your bank, and don't be pushed into using their finance package.  Be prepared to walk away from the salesmanship desk until he meets your price.  If he can't, go somewhere else to buy. Don't fall in love with the beauty of the truck until they meet your price and pass you the keys.