Primary Guild--1) The first guild you join. This guild determines your
bulk, your hermetic vs. spiritual spellcasting method, and your future
guild choices. 2) Any guild which consists of 20 levels.  20 level guilds
can also be your second choice, but you will only be able to advance to
14th level in them.  20 level guilds cn also be your third choice, but you
will only be able to advance to 9th level in them.  In every guild you join
after the second one, you will only be able to advance to 9th level in it.