The following is a collection of resources I have found to be useful in regards to Agile software methodology in larger companies. In my experience, enterprise software development is considerably more complex and vulnerable to breakdowns in design, development and delivery than smaller development projects.
The Scrum Guide is a must read for all practitioners. I suggest not to rely on spoon fed content from training companies as personal or company opinion tends to be added to presentations.
Please post any resources you believe are relevant!