Law students may join up to five free sections per year. Download the application.For immediate enrollment, please log onto your My Bar Page at texasbar. Com and click Join Sections. The Online Membership Directory provides basic information about Attorneys licensed to practice in Texas. In Texas, attorneys can become board certified in the specialty practice area of Oil, Gas, and Mineral Law. Please fill out the registration form below. To enroll in paid sections online, log onto your My Bar Page at texasbar. Why Choose a Board Certified Lawyer? Board Certification is a mark of excellence and a distinguished accomplishment within the Texas legal community.