Understanding español de España
Once you can understand a Spaniard then you can basically understand any Spanish speaker? Correcto o Incorrecto?
2 Answers
Castellano from Spain should work just about anywhere Spanish is spoken
Depends on the quality of that speech.
You could say the same about a person from Mexico, Guatemala, Colombia, etc. If you have tutor, friend, whatever that has (at least) an average education level you should have a good base for your Spanish, which will be understood everywhere.
That's right with the caveat that like english there are regional differences and accents and even dialects. For Example US English and UK English sound quite different and there are numerous differences in spelling and pronunciation but people from either country should have no problem understanding each other. Castellano from Spain should work just about anywhere Spanish is spoken