So here's the big picture....textbooks are expensive and budgets for everyone are tight. Most physics texts are essentially identical in broad content and presentation. Since you can get slightly older editions of any typical text for less than $40 why wouldn't you. For my classes I write my own homework problems (sometimes better, sometimes not) so there is no reason to buy a particular text. In addition, there are starting to be a significant number of open source texts that are very much like the traditional texts. Over the last 20 years a particular field of research called Physics Education Research (PER) has developed and helped teachers better understand the specific challenges of learning physics.
Randall Knight's text called Physics for Scientists and Engineers (Pearson) is heavily based on insights from PER and is a great choice if you wish to have a good learning tool and future reference. No need to get the current version since we will not depend on specific exercises and problems in the text. I will also provide you with links to pdf copies of a number of open source texts and you can choose what works best for you. I will endeavor to make it hurt a little if you come to class and haven't used the reading assignments to guide your personal reading.
Reasonable choices for texts:
Physics for Scientists and Engineers; Knight
A newer text based on PER concepts and ideas. Look on Amazon for 2nd edition used for less.
A different, more descriptive approach to physics. Lots of interesting insights. Open Source. 53 Mb
Another well written open source physics text. 31 Mb
A fairly unique approach to phyiscs that develops from a more modern physics perspective. 1.5 Mb
This is an open source version of a very traditional physics text. All the usual proofs and descriptions here. 2 Mb each
