depending on what type of wood. If you are "Floating" a floating floor it is the easiest method of installation.
If nailing or stapling on top of a wood sub floor is the second in difficulty(make sure to have all the right tools)
last is gluing on concrete. It is the most difficult to do.
If you are not floating than I wouldn't recommend doing it your self.
Find a wood you like that has a glue less floating system. It should have a locking mechanism in the tongue and groove. Leave 1/4 inch around the perimeter, lock the planks together staggered (stair-step like this
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you don't want the 4 corners to meet. cut the first piece you install and don't let any pieces to the wall become less than 5 inches.
very easy. glue less floating floor