used to / be used to

When I was in "Post-secondary preparatory school " (I don't know if it is the good translation for "prepa" ... ) I learnt what was the difference between this two phrases, but I don't remember anymore...

• We use the used to do expression to talk about:
  
  • an activity that we did regularly in the past (like a habit)
  • a situation that was true in the past.
  Example :
  I used to smoke.


• The be used to expression is for talking about something that is familiar to us or easy for us. For example:
  I am used to driving on the left.
  I'm used to going to Disneyland Paris.