This event only happens every OTHER year, and it moves around, so we're lucky to have it local this time. It's at the Oakland Convention Center, where EBHQ used to have its shows; right next to 12th Street BART Station. Parking is available; if you don't like the convention center prices, drive down Washington Street and you'll see several less expensive lots. I've used the one at 7th and Washington (only reachable from the 7th street side) for years and nobody's ever bothered my car. (I get my hair cut next door at the fabulous TOPPS Salon.)
The website for CNCH has a $2 discount coupon you can print and bring with you.
The gallery of weaving samples is always just amazing, and there are baskets, and often things woven from improbable materials (old cassette tape; Capri Sun juice containers; you name it). There's a hands-on, make it/take it area, and chances for hands-on weaving, spinning, etc.