Use Pimsleur Russian Archive as Phase 1 (first 30–60 days) to train your ear and mouth. Then immediately add a grammar workbook (e.g., Sputnik or Russian for Beginners ) and a frequency dictionary or flashcard deck (Anki with 2000 most common words). Pimsleur alone will leave you able to ask for directions but unable to understand the answer.
expanded the course into Levels I, II, and III, each containing 30 lessons plus reading practice. Current Digital Version: Now spanning pimsleur russian archive
Amazon/Audible sells the courses as "Audible Original" audiobooks. Use Pimsleur Russian Archive as Phase 1 (first