FEDERAL RETIREES MEETING, Anne Barnes discusses retirement benefits with Southern Prince George's County Chapter 1260 of the National Active and Retired Federal Employees. 1 p.m., Oxon Hill Library, 6200 Oxon Hill Rd., Clinton. Free. 301-292-3542.
NEW CARROLLTON LIBRARY MEETING, discussion of fundraising, volunteering and special projects; meeting of New Carrollton Friends of the Library. 7 p.m., New Carrollton Library, 7414 Riverdale Rd., New Carrollton. Free. 301-459-6900.
ONLINE HOMEWORK HELP, for students in grades 4-12, tutoring in math, science, social studies and English, from teachers, university professors and graduate students. 2 p.m.-midnight daily; Spanish-speaking tutors in math and science, 2-10 p.m. Sundays-Thursdays. Available through the Prince George's County Memorial Library System's Web site, www.pgcmls.info.
BEGINNERS COMPUTER CLASS, for people 18 and older with little or no computer experience. 7-9 p.m. Fridays through Sept. 30, Prince George's Sports & Learning Complex, 8001 Sheriff Rd., Landover. $50; nonresidents of Prince George's and Montgomery counties, $60. Registration required. 301-583-2430 or www.pgsportsandlearn.com.
GREENBELT WRITERS GROUP, open readings of all types of writing, a publishing workshop and spontaneous writing sessions, sponsored by the Greenbelt Writers Group. 7:30 p.m., Greenbelt Community Center, 15 Crescent Rd., Greenbelt. Admission, free; annual membership fee to join the group, $7.50. 301-204-3579 or www.geocities.com/thegwg.
COLLEGE PARK FARMERS MARKET, fresh fruits and vegetables in an open-air market, sponsored by the Maryland-National Capital Park and Planning Commission. 7 a.m.-noon, Ellen Linson Swimming Pool parking lot, 5211 Paint Branch Pkwy., College Park. Free. 301-277-3717.
WILDLIFE CENTER PLANT REMOVAL, volunteers will help remove invasive plants from the wildlife habitat; wear long pants and sleeves and bring gloves and hand tools. 10 a.m.-noon, National Wildlife Visitor Center, Powder Mill Road, between Baltimore-Washington Parkway and Route 197, Laurel. Free; reservations required. 301-497-5887.
FAIRMOUNT HEIGHTS FESTIVAL, games, children's activities and refreshments. 1 p.m., Fairmount Heights Library, 5904 Kolb St., Fairmount Heights. Free. 301-883-2650.
MITCHELLVILLE ITALIAN FESTIVAL, Italian music and dancers; a magician; children's rides, games and prizes; and homemade Italian food for sale. 11 a.m.-6 p.m., on the grounds of the Villa Rosa Home, 3800 Lottsford Vista Rd., Mitchellville. Free admission. 301-459-4700.
HISPANIC FESTIVAL, food and music, carnival games, a petting zoo, children's rides and crafts. Noon-6 p.m., Lane Manor Park, 7601 West Park Dr., Adelphi. Free. 301-445-4500.
ROMANCE NOVELS READINGS, authors Kathryn Caskie, Kate Dolan, Janet Mullany, Diane Perkins, Mary Jo Putney and Lucia St. Clair Robson will read from their works; also, refreshments and a guided tour of the museum. 1 p.m., Riversdale House Museum, 6005 48th Ave., Riverdale Park. $5. 301-864-0420.
AUTHOR APPEARANCE, actress Denise Nicholas presents her novel "Freshwater Road," about 19-year-old Celeste Tyree, who in 1964 leaves her middle-class college campus and travels to a small Mississippi town to register blacks to vote. 7 p.m., Oxon Hill Library, 6200 Oxon Hill Rd., Oxon Hill. 301-839-2400.
BOWIE-CROFTON CAMERA CLUB, a club meeting with guest speaker photographer and photojournalist Luis Gomez. 7:30 p.m., All Saints Lutheran Church, 16510 Mount Oak Rd., Bowie. Free. 301-464-4212 or www.bowiecroftoncameraclub.homestead.com.
HYATTSVILLE FARMERS MARKET, seasonal fruits and vegetables. 2-6 p.m., Queens Chapel Town Center, rear parking lot, Queens Chapel Road and Hamilton Street, Hyattsville.
BELTSVILLE EVENING STORY TIME, for ages 4-7. 7 p.m., Beltsville Library, 4319 Sellman Rd., Beltsville. Free. 301-937-0294.
BOWIE YOGA CLASS, for beginners 18 years and older, an open house event. 7-8 p.m., Huntington Community Center, 13022 Eighth St., Bowie. Free. 301-464-3725.
BRANDYWINE POWER PLANT TALK, officials from the Chalk Point power plant discuss the facility and environmental conditions, sponsored by the Greater Baden Aquasco Citizen's Association. 7:30 p.m., Baden Firehouse, 16608 Brandywine Rd., Brandywine. Free. 301-888-2831.
CONSUMER FRAUD DISCUSSION, for ages 60 and older, attorneys discuss identity theft, predatory lending and other types of financial scams; plus, a question-and-answer period, sponsored by the Law Foundation of Prince George's County and the Prince George's County Area Agency on Aging. 10 a.m.-2 p.m., the Prince George's Ballroom, 2411 Pinebrook Ave., Landover. Free; reservations required. 301-864-5783, Ext. 102.
SENIOR CENTER BID WHIST, for ages 55 and older. 12:30-3 p.m., Camp Springs Senior Center, 6420 Allentown Rd., Camp Springs. Free. 301-449-0490.
HOMELAND SECURITY TALK, Washington Post staff writer Walter Pincus discusses homeland security and terrorist techniques, sponsored by the University of Maryland University College (UMUC). 6:30 p.m., UMUC Inn and Conference Center, 3501 University Blvd. E., Adelphi. Free. 800-888-8682.
-- Compiled by LISA MARTIN
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