WordReference.com is an excellent website & has a decent app. The website includes 3 English-Spanish Dictionaries, Synonyms, Verb Conjugator, Spanish Dictionary, plus comments & explanations from native speakers.
How to type accents on a computer
How to type accents on an iphone
How to type accents on a Chromebook (YouTube video)
Use our Spanish Resources to watch helpful videos, do online practices, Quizlet sets, etc.