— Gain confidence in using a tablet or smartphone by taking a free workshop sponsored by AARP and AT&T. The AARP TEK (Technology, Education and Knowledge) workshops help people 50-plus get comfortable with using mobile technology to gather information, take photos and stay connected with family and friends. A TEK workshop will be held in Des Moines on April 14-15. Two-hour sessions in the morning are designed for beginners and in the afternoon for those with intermediate skills. Devices will be …