You're looking for a good resource on "Rivstart B1 B2" with a free PDF download option!
"Rivstart" is a popular Swedish language course, and B1 and B2 refer to the Common European Framework of Reference for Languages (CEFR) levels. Here's what I found:
Rivstart B1 B2 is a Swedish language course designed for learners at the B1 and B2 levels. The course is developed by Prisma, a well-known Swedish publisher of language learning materials.