’Tis the season for scarves and sweaters. Emma Robertson, the crafty brain behind the blog EmmaDime.com, has released her new book, Knitting by Design, just in time for fall. With creative modern designs and hand-drawn instructions, Robertson’s step-by-step guide helps to clear away any anxieties you might have about knitting. In addition to visual how-tos on classic cold-weather essentials, such as vests, mittens, and sweaters, the book includes guidance on making unique accessories, including bowtie hairclips and felted flowers. Whether you’re a seasoned knitter or an inspired novice, grab a pair of knitting needles and join Berkeley resident Robertson at Books Inc. (1760 Fourth St., Berkeley) to learn how to add a personal touch to staying warm this season.