Local library cards may be used to check out books at any library in the Ramapo-Catskill Library System in Orange, Rockland, Sullivan, and Ulster counties. Monroe Free Library 44 Millpond Parkway, 783-4411 For adults: Buying a computer - Monday, April 18, 1:30 to 3:30 p.m. - Find out what you need to know from computer maven Pat Bennett. Bus trip - Wednesday, April 27, to Merchant's House Museum and South Street Seaport in Manhattan, $25 per person. For children and teens: After school special craft n Wednesday, April 20, from 4:30 to 5:30 p.m. Snacks included. Register by April 18. Disney film festival - every Saturday from 1:30 to 3:30, between April 23 and May 21. For information, call 783-4411. Preschool storytime - two-year-olds meet Tuesdays at 10 or 11 a.m. or Fridays at 10 a.m., three-year-olds meet Thursdays or Fridays at 11 a.m., four- and five-year-olds meet Wednesdays at 1 p.m. or Thursdays at 10 a.m. Walk-in storytime - Saturdays from 11 to 11:30 a.m. All ages welcome, stories for children age 2-4. Parent stays with child. No registration necessary. Mad Science - amazing experiments, Tuesdays at 4:30 from April 26 through May 17. Registration required. Tuxedo Park Library 227 Route 17, 351-2207 For adults: 55 Alive Safe Driving Refresher Course - 9 a.m. to 5 p.m. on Monday, April 25, $10 Fee. Must be 50 or older to register. Ten Keys to Successful Investing n Wednesday, May 4, at 7 p.m. Registration begins April 18. For children and teens: Mother Goose Time - 10:30 a.m. on Mondays, books, songs, and fingerplays for babies 3-11 months and caregivers. Make a French Memo Board n Wednesday, April 27 at 7 p.m. Adults and children 12 and over welcome. $10 supply fee. Registration begins April 11. Mother's Day Craft n Wednesday, May 4 at 4:30 p.m. For ages 4-7. Registration begins April 18. Friends of Tuxedo Park Library Spring Book Sale on Saturday, June 4 from 9 to 3 p.m. Volunteers are needed to work a 2-hour shift. Woodbury Public Library Central Valley, 928-2114 For adults: Get Knitting II n 3 p.m. Sunday, April 17, at Highland Mills, 16 County Rte. 105. Basic Yoga n 7:30 p.m. Wednesday April 20 at the Central Valley Branch. UFOs - Fact or Fiction: You Decide n 3 to 6 p.m. Sunday, May 22, at the Highland Mills Branch. Register at 928-6162. Computer classes: The Highland Mills Branch is offering computer classes through April, May and June. Introduction to Computer Basics Tuesday, May 3, 9 to 11:30 a.m. Computer Basics II: The Next Steps Wednesday, May 11, 6 to 9 p.m. Find it Online Wednesday, May 18, 6 to 9 p.m. Email Tuesday, May 10, 9 to 11:30 a.m. Introduction to Microsoft Word Thursday, May 5 and 13, 9 to 11:30 a.m. Introduction to Microsoft Excel Wednesday, April 27 and May 4, 6:30 to 9 p.m. The Power of Powerpoint Thursday, May 19, 9 a.m. to 12 p.m. Introduction to Microsoft Publisher Thursday, May 26, June 2, and June 9, 9 to 11:30 a.m. Make-it-Yourself Cards & Labels Thursday, April 21 and 28, 9 to 11:30 a.m. Online Travel Planning Wednesday, May 25, 6 to 9 p.m. A $10 deposit is required at time of registration. Call 928 to 6162. For children and teens: Evening Stories n Tuesdays at 7 p.m. Stories chosen for ages 3-5, at the Central Valley Branch -- the whole family is welcome! No registration necessary. Continues through August. Morning Stories n Thursday at 9:30 a.m. For ages 2 - 3 1/2 with a parent, at the Highland Mills Branch. No registration necessary. Continues through June 23. Get Ready for the Prom! n 4-6 p.m. on Friday, April 15, at Central Valley Branch, 23 Smith Clove Rd., makeup and hair tips and tricks for grades 7-12. Register at 928-2114. NOTE: April 10 through 16 n National Library Week amnesty at both branches. No fines on overdue materials returned during this week. Middletown Thrall Library Middletown, 341-5454 For adults: Book discussion - 7 to 9 p.m. Wednesday, April 27, "The Living" by Annie Dillard, led by Peggy Abt, Professor Emeritus, OCCC, English Dept. Book discussion - 7 to 9 p.m. Wednesday, May 11, "Time and Again" by Jack Finney, led by Peggy Abt, Professor Emeritus, OCCC, English Dept. Books will be available at the library.