ESTAR (to be) is used for 4 basic concepts - LOCATION - HEALTH - CHANGING MOOD or CONDITION - and PERSONAL OPINION in terms of TASTE or APPEARANCE.
(This is American Spanish and does not contain the form "vosotros" since that is apparently only used in Spain.) ***** Normally, the pronouns "yo, tú and nosotros" are omitted in conversation. (They are used when you want to emphasize.) This course contains practice sentences. Remember number & gender must match in sentences.