What other resources do you use to learn Spanish?

Hi!

I have taken a couple of semesters of Spanish but I am finally getting serious about learning because I am going to Spain in September. For anyone who is learning or had learned Spanish (or another language) what resources helped you the most? It is a bit overwhelming how much there is to choose from (Duolingo, Memrise, books, audio programs, etc) so I would love to hear what is worthwhile and what isn't.

Thanks for any input!:)