difficult or easy i think is (incorrect) when it comes to logcabins blocks- they are not difficult- but can be quite---tedious---it does become easy to have your strips become wonky-
it is still considered an easy beginner pattern- some people square up with every additional strip- some people square up when the blocks are completed- some people put together the top without ever trimming their blocks.
there is no (right way/wrong way) only different ways.
do what you feel will give you the outcome you are seeking.