A longstanding challenge for adult education (AE) program staff is how to motivate learners to persist in their studies and connect them to resources that can help mediate their barriers to participation in AE. A promising approach to addressing U.S. high school learners' access to financial aid and enrollment in higher education is "nudging" learners through text messaging. This Technology-Based Coaching in Adult Education (TBCAE) Toolkit is designed to assist adult education program administrators, program staff, and state staff in planning and implementing text messaging that supports adult education learners' program participation and attainment of education outcomes. The information in the TBCAE Toolkit is based on prior research on the use of text messaging with adult learners and lessons from the TBCAE project's implementation of individualized and personalized text messaging with more than 400 adult education learners from 10 adult education programs in four states. The toolkit provides five sections of tools, checklists, forms, and other resources that AE program staff can use to plan and implement text messaging in their AE programs. These documents can help program staff determine: (1) how to use text messaging and with whom; (2) what types of text messages will support AE learners to persist and succeed; and (3) how to review information from learners' text messages to identify challenges that they face participating in AE and possible ways to address those challenges.