Step 5: IC U R OK
This is also a little annoying- you may need to hold the socket into place with your finger as you solder at least one end in. It may be easier to just put the entire board on the end of your table for the first few soldering points. After that you can move the board back to your vice since the socket will not fall out.
Solder everything, and then stick the IC on top. Remember to also line up the IC (has the "U" drown on it) with the socket. There's a dark circle on the IC, which should be facing the serial port when oriented properly.