Ultimately, the best format is the one you actually use. Whether printed paper or a tablet screen, complete one unit of the Side by Side 2 Workbook every two days, and you will see a massive improvement in your English fluency within one month.
: Simple present, past, and future tenses; count/non-count nouns; and comparatives. Daily Interactions : Shopping lists, grocery lists, and following recipes. Work & Education
Search for "Side by Side 2 Workbook (Kindle Edition)". Amazon’s conversion tool allows you to view the workbook on a PC or tablet. You cannot get a raw PDF, but the Kindle app replicates the experience.
The workbook stands out for its "student-centered" and "interactive" approach. It incorporates several specialized tools to enhance learning: Side by Side Workbook 2 PDF | PDF | Noun - Scribd