Below are videos taken from YouTube that will help with your playing

First of all ; how to put your reed onto your mouth piece. This applies to either the Clarinet or the Saxophone 

beginning clarinet; putting it together, setting it up, getting a sound

Basic  embrochure; how your lips and mouth form over your mouthpiece

Some more on embrochure;

​NOW WE HAVE A VIDEO ON READING THE LINES AND SPACES OF THE TREBLE CLEF

notice that I said 'reading lines and spaces"  NOT  "reading notes.

this is because it is the lines and spaces that are named : A,B,C,D,E,F,and G. The notes themselves are actually named only for the amount of time they are held for :
quarter note = 1 beat
half note = 2 beats
whole note = 4 beats
and so on. 
IF YOU SAW THE HEAD OF SQUIDWARD ON THE BOTTOM LINE OF THE TREBLE STAFF, YOU WOULD PLAY AN   'E'. I don't know how LONG you would hold it for, but it would be played as  'E' because ANY note symbol on the bottom line of the staff is played as   'E'

Clarinet: playing high notes      (and basic technique)

​here is a video on reed choice;

5 common mistakes : Watch This - it helps tuning and tone

4 more mistakes : Watch This - it helps tuning and tone

now, a video on clarinet maintainance  (taking care of your instrument)