What is your advice for learning Spanish?
Which books should I purchase?
Also how old were you when you began learning your second language?
my advice is to first start out by learning all the grammar and vocabulary, classroom style
then once you've learned most of the common vocabulary and grammar, and can properly make sentences and read decently, then it's time to start practicing listening and speaking
listen to music (with lyrics on), talk to spanish teachers on italki, watch tv shows or youtube
i recommend you go on libgen.rs and download the "Avancemos" books, since that's what I used
I was 12 years old when I started learning Spanish, but I didn't really take it seriously until like 22 or so
I actually grew up speaking 3 languages at a time, so they were all co-native languages: fuzhonese, mandarin, english
although my mandarin is the weakest out of all 4, since I don't use it much, and it's harder to improve than Spanish