Beginner videos published by Buffet Crampon Paris.
The concepts are all included in So You Want to Play the Clarinet. 

Clarinet Assembly Part 1:  Cork Grease

Parts of the Clarinet
03:11

Parts of the Clarinet

How to Apply Cork Grease
02:31

How to Apply Cork Grease

How to apply cork grease to all parts of the clarinet before assembly.
How to form the Clarinet Embouchure
01:48

How to form the Clarinet Embouchure

How to form the clarinet embouchure and make a sound on the barrel and mouthpiece.
EMBOUCHURE EXERCISE
01:12

EMBOUCHURE EXERCISE

Here's a simple exercise to help reinforce good embouchure habits.
How to Assemble the Clarinet