A monk may take a secondary guild.  If the monk completes a secondary
guild they may take terts as normal. (help paths of power)  However,
monks have another option when choosing guilds.

At level 20, a monk has the option to immediately begin taking
tertiary guilds rather than taking any secondaries at all.  At level
21 and beyond a monk can choose from any of the style-based terts in
addition to secondary guilds.  These special terts are 9-level guilds
which allow the monk to use a new style of martial arts.  Each style
is either a hard form or soft form martial art (help martial arts).

-=-Soft Form Terts
----------------------------
Ba gua
Cobra Touch
Glima
Lee Kwan Choo
Lightning Dwarf
Ninjitsu
Tae kwon do
Tien hsueh

-=-Hard Form Terts
----------------------------
Bringer of blood
Dragon claw
Mantis
Mo chi kung fu
Moo gi gong
Thunderfist
Tiger claw
White crane
Zanji shinjinen-ryu

If a monk learns two new forms in the same style, the monk may begin
taking a path dedicated to improving their chosen style.  Forms may be
learned either from 9-level tert guilds OR from a secondary.  Starting
with Shikan-ken for soft styles or Buraindo kobushi for hard styles,
the paths are designed to improve all of the monk's performances when
using their chosen style.

Example 1:
Felix reaches level 20 and decides he wants to focus on soft styles. 
He takes 9 levels of Glima and 9 levels of Cobra Touch.  At level 38,
he can now begin the soft style path at Shikan-ken.

Example 2:
Felicia reaches level 20 and decides she wants to focus on weapon
styles.  She takes 14 levels of Shih, earning the mo chi kung fu
skill.  She also completes 9 levels of Mantis.  At level 43 she can
now begin the hard path with Buraindo kobushi.

Example 3: 
After reaching level 20 Bob takes 9 levels of Glima and 9 levels of
Mantis.  He is NOT eligible to take either the soft path or hard path
guilds because he does not have 2 forms in the approrpiate style.  He
will need to complete one more guild in either style before beginning
on the path.

See also: HELP MARTIAL ART PATHS