UML Video tutorial

UML text  tutorial here, the software can be downloaded from IBM Rational Rose 
(Class Diagrams and Sequence Diagrams are most used.)

Classes of objects and instances of objects	Requirements Modeling and Use Cases, Part II	Adding Associations to Class Diagrams	UML From Requirements to Classes. Part I	UML Class Quality Part II: Designing Objects with Responsibilities
UML Class Diagram, Data Types, and Attributes	UML Class Quality Part V: Designing Objects with Responsibilities	UML Class Quality Part III: Designing Objects with Responsibilities	UML Class Quality Part IV: Designing Objects with Responsibilities	Case Study: Point-of-Sale System
Elaborate Use Case Example, Part II	UML Class Quality Part I: Designing Objects with Responsibilities	UML Class Diagram, Adding Class Attributes	UML class diagram	UML Sequence Diagrams
UML Class Diagram Association Roles and Multiplicity	Inheritance and Polymorphis	UML Use Case Diagram	UML Interfaces	UML From Requirements to Classes. Part II
Elaborate Use Case Example, Part I	Object Oriented Paradigm	Requirements Modeling and Use Cases, Part I