How do I install EMT conduit for an outdoor 6/4 power run?
It is definitely doable.  Like @Tester101 indicates, you need a conduit bender.  They are available at the big-box stores.  Will be a little more expensive than you might like.  So will wire.  A pipe cutter, like the plumbers use would be advantageous to make your cuts square.  And, of course, you need a drill suitable to make a hole through your house. Other than that, you need a screwdriver, tape measure and pencil.

Your biggest challenge will be maintaining your patience.  Bending conduit is not intuitive.  You should do a little study before you start, and recognize that you're going to make a couple of miss-bends.