ALCOHOLICS ANONYMOUS, 2-3 p.m., Conference Room 2/3, Potomac Hospital, 2300 Opitz Blvd., Woodbridge. 703-445-0777.
MYSTERY BOOK CLUB, "Murder on the Yukon Quest," by Sue Henry. 7 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free; registration requested. 703-792-4500.
NATURE CAMP, for children 8-12, sponsored by the Friends of Bull Run. 9 a.m.-4 p.m. today through Friday. Bull Run Mountain House, 17405 Beverly Mill Dr., Broad Run. Members, $135; non-members, $185. Reservations required. 703-753-2631.
STORY TIME, for children 3-7, with a caregiver. 7:15 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
DIABETES SUPPORT GROUP, for patients and family members, sponsored by Potomac Hospital. 7 p.m., Conference Room 2/3, Potomac Hospital, 2300 Opitz Blvd., Woodbridge. 703-221-2500.
ALZHEIMER'S CAREGIVER SUPPORT, 7 p.m., Prince William Senior Center, 13850 Church Hill Dr., Woodbridge. 703-792-4991.
WORD PROCESSING CLASS, basic instruction. 9 a.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free; registration required. 703-494-8126.
BULL RUN TROUBADOURS, 7:30 p.m., Trinity Episcopal Church, Battle and Church streets, Manassas. 703-753-2249.
PRINCE WILLIAM CHESS CLUB, 7-9 p.m., Game Parlor, 14400 Smoketown Rd., Woodbridge. 703-670-5887.
STORY TIME, for children 3-7 with a caregiver, 10:30 a.m.; for children 4-7 with a caregiver, 4 p.m.; Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
TAKE OFF POUNDS SENSIBLY, weight-loss support group. 9-11 a.m., Prince William Senior Center, 13850 Church Hill Dr., Woodbridge. Free. 703-494-2692.
WRITERS GROUP, 7:30 p.m., Borders Books & Music, 2904 Prince William Pkwy., Woodbridge. 703-897-8100.
TOASTMASTERS INTERNATIONAL, Lake Ridge Club No. 8913. 7:30 p.m., Tall Oaks Community Center, 12399 Hedges Run Dr., Lake Ridge. 703-494-5530.
BEREAVEMENT SUPPORT GROUP, 7 p.m., Bethel Lutheran Church, 8712 Plantation Lane, Manassas. 703-368-9800.
CANCER SUPPORT GROUP, for patients and family members, sponsored by Potomac Hospital. 7 p.m., Potomac Center (next to the hospital), Suite 320, 2296 Opitz Blvd., Woodbridge. 703-221-2500.
EXCEL CLASS, basic spreadsheet instruction. 7-9 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free; reservations required. 703-494-8126.
CONCERT, for children 6 and older. 2 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free; reservations requested. 703-494-8126.
FAMILIES ANONYMOUS, for parents of children with substance abuse problems. 8:30 p.m., old Marsteller School building, Room 24, 8730 Sudley Rd., Manassas. 703-530-8973.
FARMERS MARKET, 7 a.m.-1 p.m., Church Street, next to the fire station in Old Town Manassas. 703-361-6599.
ALCOHOL RECOVERY MEETING, Back Door Friends. Noon, River Woods Community Center, 16573 Nanticoke Rd., Woodbridge. 703-221-5513.
FARMERS MARKET, 7 a.m.-2:30 p.m., Church Street, next to the fire station in Old Town Manassas. 703-361-6599.
RECOVERY INC., for people experiencing anxiety, depression, fear and other emotional problems. 10 a.m.-noon, Cokesbury United Methodist Church, 14804 Blackburn Rd., Woodbridge. 703-490-5423.
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