All infantry trainees study from the same set of tools to practice energy. Each trainee receives a set of digital/physical books and video lectures to study. For OPs, energy is a narrow and strict practice. There is no room for whimsy or creativity. Each OP must hone their mind and their craft, and use their power responsibly.
OPs are taught that their successes and failures are their own—if you make a mistake, you might not be saved. If you fail to learn the approved conventions for operatives, you take the blame for your downfall. The guidelines preach self-accountability as much as any energy principles.
An operative customizes their mode of combat to some degree. Many prefer defense to offense, raw energy to weapons, long-range to short-range fighting, etc. The most customizable aspect of the operative's disciplines is their choice of weapon. All operatives are required to at least one weapon; a standard black pistol for use in public. The other weapon, secondary weapon is any you can imagine, but there are suggestions steering your choice. Your secondary weapon should not be a projectile weapon; meaning things like guns, slingshots, bows, or any other weapon that tosses or throws an object. These weapons are better suited for later in a fight, because anomalies can easily dodge a bullet at even half their energy capacity. OP handbooks advise you to go with a weapon with a blade, long enough to create at least two feet of distance between you and your opponent.
Weapons are made with offensive energy.
An operative (or any corporeal anomaly) can have many weapons in their arsenal. Unfortunately, most operatives lack dedicated time to create multiple physically manifested objects.