Several students have asked me which book to buy.
Older editions have different material and different problems.
One is Single Variable and the other Multivariable . If you already have the multivariable version, it will work fine - the two books are identical up through chapter 8. I have also been asked about calculators. I am reasonably proficient with most TI calculators - ask me for help if you're not sure how to do something. I'll do my best to help, but can't promise anything.