Hi Rebecca! Watching tv shows and movies has helped me to improve my fluency, so you're on the right path for sure. My two favorite tv series that are now available on Netflix US are Gran Hotel and Casa de Papel - and the two share a couple of actors, which adds a bit to the fun. I've just started Cable Girls and have enjoyed so far, so that's a great third option.
Gran Hotel: https://www.youtube.com/watch?v=enBnpGMSQmU
Casa de Papel: https://www.youtube.com/watch?v=cQYvQIrM1FY
Cable Girls: https://www.youtube.com/watch?v=cSBa8u_oEQM
Watching the shows with English subtitles has been necessary for me, at least the first time through - I agree with Rachel, it definitely helps you understand the jokes and slang that characters use with one another. The second time through, I've watched with Spanish subtitles on, which helps me to grasp more specifics from a grammatical standpoint.
This professional recommends the following next steps:
- Watch Gran Hotel
- Watch Casa de Papel
- Watch Cable Girls