Half FYI for new Commerce Bug users, half shameless plug. This screencast covers the programable access control list features of Commerce Bug. That is, it shows you how you can hide Commerce Bug from certain users (Managers!) and show it to others (Developers!)
Frustrated by Magento? Then you’ll love Commerce Bug, the must have debugging extension for anyone using Magento. Whether you’re just starting out or you’re a seasoned pro, Commerce Bug will save you and your team hours everyday. Grab a copy and start working with Magento instead of against it.
Updated for Magento 2! No Frills Magento Layout is the only Magento front end book you'll ever need. Get your copy today!