As already mentioned, new shocks are pretty easy to install on these trucks. Here are a couple of tips to make it even easier. Spray the bolts and nuts a day or two before you start with a good penetrating oil to make sure you have no problems getting the bolts out. There is no need to jack up the truck or remove any wheels, just slide right under it and start removing the shock bolts. The front shocks have a tab welded to the nut. It's there to keep the nut from backing itself out. Reinstall it with the tab in the same position it was in before removal. To make removal of the front shocks easier, turn the wheels to the left. Use Pocket's tip if you use Bilstein shocks.
If your truck has over 30k miles and you're changing out your original shocks, prepare yourself for a completely different truck when you take it for a test drive after replacement!