How important is the edition of the book?

<p>I'm ordering textbooks these days, and in an effort to save money, I've been buying the older editions rather than the most recent up-to-date one. I know that there will be some differences because of the change of editions, but will it be that big? Will I be able to get through class with an older edition textbook or is it essential that I get the latest one? Thanks.</p>

<p>You should probably email the prof. If he assigns book homework it would be a problem.</p>

<p>Did you check Amazon & for the correct edition? Also, you can try renting via Chegg. All are great ways to save money.</p>

<p>Good luck!</p>