intel - drop the CPU in the socket, place the heatsink/fan on top and lower the levers, done. no tools needed.
AMD - drop the CPU in the socket, place the heatsink/fan on top then grab a screwdriver and PRAY TO BABY JESUS you do not crack the core while securing it, or the tabs break off the bracket.
i know souly will add something below this, but AMD installations ARE NOT for beginners.