My favorite site, by far, is GoComics.com. They have 33 major comic strips in Spanish, including some serious heavy hitters such as: Garfield (my favorite!), Calvin and Hobbes (very close second place to Garfield), FoxTrot, Cathy, Heathcliff, Ziggy, and many more.

Additionally, there’s this very cool online comic series that I particularly like because it’s designed for language-learners and clicking the speech bubble gives you the English translation, very nifty.

How to use it

Simple, just read along, look up what you don’t know, note it (on flashcards or in a SRS such as Anki), then reread from start to finish making sure you can understand it all. I also recommend you speak what you’re reading out loud–if you have any questions about how to pronounce something, just go to Forvo where you can hear a native speaker (usually multiple native speakers) pronounce a word for you. I recommend you have SpanishDict and Google Translate pulled up along with Anki, or have your flashcards and a Spanish/English dictionary at hand as you’re reading.