They say learning begins at home. You say: Um, duh. Here are three new no-brainers for launching the education of your baby, preschooler, or kindergartener.Baby Virtuoso CDWhat it teaches: Babies’ growing brains are sponges for musical building blocks (intervals, chords). Local musician and dad Adam Schwartz’s new CD features ten harmonic listening exercises in piano and flute, designed to forge the neural pathways of musical fluency.Bonus: Track ten, a lush piano rendition of Brahms’s famous lullaby will soothe unsuspecting nippers to sleep.Get it: $12 online at babyvirtuoso.com.How to Choose the Best Preschool for Your Child What it teaches: An exhaustive guide to the world of playdate interviews and financial aid forms, this new book will ease the anxiety of the preschool quester. Plus, it can be tapped selectively rather than cover to cover. If you’re starting late, two worksheets will get you up to speed.Bonus: Meet local author Jenifer Wana on Friday, 5:30-6:30 p.m., at Cover to Cover Booksellers.Get it: $10 online at amazon.com.Kidlandia Customized MapsWhat they teach: There’s nothing more thrilling for a kindergartener than sounding out a new word — except for maybe ruling her own land. These fantastical maps grant both: the website allows you to create a kingdom named for your little reader and furnish it with custom cities, ports, and creatures. Kidlandia then prints your map large or small, on canvas, paper, or vinyl wall clings. Bonus: For kids who are over fantasy, customizable U.S. and world maps are available.Price: $29-$149 online at kidlandia.com.Looking for the perfect lunch box? Check out our photo gallery.DELVEMonterey Bay Aquarium Research Institute Open HouseWhat: Curious kids can view the research vessels, make their own ROVs, and watch deep sea scientists at work.Why: Fathom the deep.When: Sat., noon-5 p.m.Where: 7700 Sandholdt Rd., Moss Landing (831-775-1700). Admission is free.FOLDMakeArt Children’s Workshop What: Kids rip, crumple, and curl to create colorful 3-D paper sculptures at the American Craft Council Show’s free (with show admission) workshop.Why: Unleash their art.When: Sat., 1-3 p.m.Where: Festival Pavilion demo area, Fort Mason Center, Marina Blvd., at Buchanan St. Show admission is $12 per adult or child.WATCH37th Annual Nihonmachi Street Fair What: A free celebration of the city’s Asian and Pacific American communities, with a children’s village, taiko drums, and to-die-for teriyaki burgers.Why: The whole fam can eat, drink, and be merry.When: Sat. & Sun., 11 a.m.-6 p.m.Where: Post St., b/t Laguna & Fillmore Sts. (415-771-9861).Photo: Courtesy of Baby VituosoUp to 75% off MLHLynne Hiriak (of Cardigan fame) ups the knitwear ante with ’70s- and ’80s-inspired dresses and sweater tops with color blocks, sequins, and vintage-meets-modern shapes. Take up to 75% off on Swirl.