To get started, here is a round-up of some of the Moroccan Arabic resources currently available online (both free and paid content).

Learning Darija in English:

Playaling <– New!!

Playaling is a fantastic resource for all Arabic learners! It curates clips in different Arabic dialects and difficulty levels. Every clip is accompanied by transcripts in Arabic and English. Most of the “North African Darija” clips are from Morocco.

Speak Moroccan Arabic
This site has great vocabulary lists and short phrase-based lessons. There is a forum, but seems to no longer be in use (as of January 2016, the last post was from 2014).

The Armchair Arabist
Amazing resource with transcribed and translated videos of naturally spoken Darija.

The Peace Corps Moroccan Arabic Textbook
Pretty much the best developed free Moroccan Arabic lessons available.

LangMedia Resources for World Languages
This is a wonderful resource of transcribed and translated videos discussing the culture of the speakers (there is material from Morocco, Algeria, Tunisia and Libya).

Loecsen Free Moroccan Arabic Lessons
Illustrated phrasebook with sound.

Talk in Arabic
This relatively new website offers content in many different Arabic dialects. I cannot speak to the quality of the site, as I have not bought a membership. They do, however, offer some free content, including this song in Moroccan Arabic with transcription/translation.

Arabic Pod 101
I had a yearlong subscription to Arabic Pod 101 and, I have to say, I regret this somewhat. The site/app is highly frustrating due to its lack of clarity as to which materials are available in which dialects. The Absolute Beginner > Survival Phrases are supposed to be focussed on Moroccan Arabic and the Absolute Beginner > Newbie Season 1 also has Moroccan Arabic versions available for every lesson.

Learning Darija in French:

Speak Moroccan Arabic
French version of the Speak Moroccan Arabic site.

Loecsen cours d’arabe marocain
French version of the Loecsen site.