Buying the audio is step one; using it like a polyglot is step two. Here is a 4-step method to supercharge your learning:
This write-up provides a detailed overview of the Touchstone 3 audio material touchstone 3 audio
Typically a set of 4 CDs containing all listening exercises, grammar presentations, and conversation strategies for the 12 units. Buying the audio is step one; using it
Now, open the textbook to the corresponding page. Listen again while reading the script. Underline connectors ("However," "On the other hand") and fill in any blanks you missed. Buying the audio is step one