go to this website: http://acls-algorithms.com/
Nothing will get you better prepared than the content on this website. Review the basics, practice the megacodes as well as the megacode videos and you'll be prepared and confident to handle a CODE without an MD available. Handling a CODE is the easy part. Deciphering when to administer treatment modalities on unstable patients prior to coding is the tricky part.
Once you've gone thru the megacodes a few times you'll be amazed at your skill level. You'll know the dosages of Epinephrine, Atropine, Vasopressin, Adenosine etc.. to give as well as starting dopamine, epinephrine or amiodarone drips. The ACLS book is too much info to take and indirectly makes you think the ACLS algorithms is much more than what it really is. A lot of the algorithms are basically the same.
You have to pay a small premium to access the full website, but if you have a few friends who are interested in the ACLS course you guys can divide the cost and share. I had 6 of my co-workers open up our computers, Iphones and an Ipad at work and we can all access the site.
Try the non-member practice megacodes and you'll be hooked.
Our ACLS instructors were very strict and the 6 of us passed easily. Some applicants had to repeat. Good luck!