Reading and watch movies and series

Memrise is a good tool, but I don't use it. I use Anki, which is a free, downloadable spaced-repetition flashcard system that spaces out words depending on how well you answer, meaning words you know show up less often and words you struggle with show up more often. It's very important to NEVER learn vocabulary as single words. ALWAYS find example sentences. You can make cards that have the individual words if you really want to (I do), but also make sure to add an example sentence on another card. A great resource for this is tatoeba.org, which you can use in almost any language to find sample sentences for a given word or phrase in any other language.

I use a website called memrise. It is free.