Downloading a PDF is easy. Using it correctly is the hard part. Here is a proven 4-week study plan to go from A2 to feeling ready for B1.

The Grammar Plus series is designed for young adults and college-level learners studying English as a second language. Its primary goal is to provide a gradual development of language skills through a clear, easy-to-follow structure.

Modern PDF readers (like Adobe Acrobat or Foxit) allow you to search for keywords. Forgot the difference between "some" and "any"? Search the PDF, and jump directly to that unit.

For every grammar point you learn (like the Present Perfect), write three original sentences about your own day.