Hello Paloma,
Here are some phrases :
"C'est pas grave"
it means 'no problem'
"Ce n'est pas mal"
it means 'not bad'
"Tu me manques"
I miss you
" On sait jamais"
It is like saying in English ' you never know'
"Ou est ce que se trouve .....?"
It means "where is ......?" ,when you are asking for directions.
" Combien coûte-t-il ?"
How much does it cost?
" Pardonnez-moi "
Excuse me
" S'il vous plaît "
Please