Meaning of ABROAD in English
BAD : Since I was small, I've always wanted to go to abroad.
GOOD : Since I was small, I've always wanted to go abroad.
BAD : I would like to continue my studies in abroad.
GOOD : I would like to continue my studies abroad.
go/live/be abroad (WITHOUT to, at, in etc)
The only preposition that is used before abroad is from : 'She came back from abroad saying how much she had missed her home and family.'
Longman Common Errors English vocabulary. Английский словарь распространенных ошибок Longman. 2012