The following presentation shows important features and functionalities introduced in Salesforce Spring 14 Release with screenshots

What is Salesforce1 ? This MindMap will give you a visual picture of various dimensions Salesforce1 to help you understand its features, capabilities and limitations

Refer to this mind map to recap the features and functionalities introduced in Salesforce.com Winter 14 Release

Useful URLs for Salesforce.com

Salesforce.com Spring 11 Release Preview Videos