Cleaning the MAF is especially important if you have never done it and you, or the PO, used oiled air filter media.
Many filters add oil to the paper element to help attract dirt and that oil can contaminate the air being pulled into the engine and cause a slight coating to build up on the MAF.
It's always good to have a can of MAF cleaner on hand and use it regularly.
It seems that the MAFs on these trucks aren't so sensitive that cleaning them regularly isn't going to damage them.
Some cars, a lot of Nissans for example, have MAFs that are very sensitive to being messed with, even cleaning them can cause them to stop working properly.
When you clean the throttle body, do not move the butterfly by hand, just spray some cleaner on the butterfly and tubing and use a toothbrush to help remove any build up.
But, all of the suggestions in the previous posts are pretty much all you need to do to enjoy driving one of these trucks.