LPT: If you plan on doing any prefabricated furniture builds, do yourself a favor a buy a 4mm hex key driver with a handle. They are inexpensive and will make your life 100x easier.

Choose one that has a handle. They come in several flavors. Ones that have a screwdriver handle, ones that have a long side and short side, and ones that have a ball end which can let you install from an angle. If you have a drill, get a set of bits. Anything over the 3" Z shaped ones they send you to install 100 screws.