The addition of procedures and techniques to the repertoire of a character adds for depth and versatility. Techniques open up combat to personalize a style on one hand, or simply offer an advantage over those who fail to learn them. Procedures advance the knowledge of aptitudes to allow for cross-pollination to improve efficiency. One must remember, this is not something that is inherent, they must be taught.
While these wonderful skills and abilities are useful, they are not widely available. Networking with others is a great way to improve your access to techniques and procedures. Guilds an Factions are a very direct source of this knowledge, however there are other sources that an astute adventurer may find. and Libraries often offer procedural training to those who work for them or learn from them. Training costs might be high, but the education is often very worthwhile.
It is not uncommon to find some techniques taught in scrolls and pamphlets, even in the fabled Fightbooks. One such book that has recently been printed is the Fightbook volume 1 by Master at Arms Thomas MacLeod. Sometimes these texts may be discovered in abandoned places, deep in the dungeons and catacombs that litter the landscape. Others may be awarded as prize for a particularly challenging quest.