RECAP:      talk about your past: 3 habits, 2 states and 1 event
Talking about a habit -> 3 options: used to, would & past simple:     We used to watch the waves, we'd blister in the sun, we couldn't wait for night to come.
Talking about a state of being -> 2 options: 
used to/ 
past simple: 
     We 
used to live on the beach and I 
loved it!
Talking about an event ->  1 option: past simple
      I bought my first real six-string in the summer of '69