Experts will discuss what to expect and how to apply for a permit, plan a route and choose proper equipment and food.
When, where: 7 p.m. Thursday at the REI store in Tustin, 2962 El Camino Real.
Admission, info: Free. (714) 505-0205.
Watch a film on grunion at the Cabrillo Marine Aquarium, then gather on the beach to await their arrival.
When, where: Friday. Aquarium opens at 8 p.m.; film begins at 9 p.m. 3720 Stephen M. White Drive, San Pedro
Admission, info: $5 for adults; $1 for seniors, students and children. (310) 548-7562.
Learn how to navigate using a map and compass in this two-day field class in Joshua Tree National Park.
When, where: 6 p.m. Friday to 5 p.m. Saturday. Oasis Visitor Center.
Admission, info: $85. (760) 367-5535.