Purpose and scope
Open Mat Field Notes is a free educational project published at zebmckinnonbjj.com. It explains general Brazilian jiu-jitsu vocabulary, common training formats, preparation, etiquette and safety considerations for adult readers.
The publication does not offer classes, coaching, certifications, memberships, events, products, bookings, payments or a physical training location. Its content is not individualized instruction, legal advice or medical advice.
What the name means here
The publication is branded Open Mat Field Notes. The domain appears as its web address. The editorial content does not provide a biography or profile of a person named in the domain and does not publish statements, credentials or endorsements on behalf of any athlete, coach, academy, federation or event organizer.
If you believe a name, mark or other right is affected by this website, send a clear description of the concern and supporting information to the contact listed on the Contact page.
Editorial principles
Plain language
We explain terms without presenting written summaries as a substitute for qualified, supervised instruction.
No invented authority
We do not publish fabricated credentials, awards, affiliations, rankings, reviews or performance guarantees.
Clear limits
We distinguish general education from medical guidance, personalized coaching and commercial offers.
Corrections welcome
Readers may identify factual, accessibility, privacy or rights concerns through the published email contact.
How to use the guide
Use the material to build a basic vocabulary and prepare questions for a prospective training provider. Verify schedules, qualifications, safety practices, pricing and contractual terms directly with the provider you are considering.
Important: do not attempt unfamiliar techniques based only on written descriptions. Seek appropriate supervision and respect the rules of the training environment.
Funding and advertising
The current version of this website does not sell products, collect membership fees, accept sponsorships, display third-party advertisements or use affiliate links. If that changes, the relevant page and policy disclosures should be updated before the change takes effect.