Comprehensive

These formal courses that cover all facets of language learning—grammar, vocabulary, listening, reading, writing, speaking:

• 🆓 https://pptonline.acm.gov.pt - courses (A1–B2 level) from Portugal’s official High Commission for Migration 🇵🇹
• 💰 http://www.instituto-camoes.pt/en/activity-camoes/what-we-do/learn-portuguese/elearning - online courses from the Camões Institute (Portugal's official cultural institution), A1–C1+ level 🇵🇹
• 🆓/💰 https://www.portugueselab.com/ - A1–B2 level 🇵🇹
• 🆓/💰 http://www.portuguesdeportugal.pt - A1–B2 level 🇵🇹
• 💰 https://www.transparent.com/ 🇵🇹🇧🇷

Live Teachers/Tutors

• 💰 https://portuguesewithcarla.com/ 🇵🇹
• 💰 https://www.portugueselab.com/ 🇵🇹
• 💰 http://www.instituto-camoes.pt/en/activity-camoes/what-we-do/learn-portuguese/elearning - Premium courses 🇵🇹
• 💰 www.tutorssaurus.com PT

Multimedia

These courses primarily consist of audio or video content:

• 💰 http://www.michelthomas.com/learn-portuguese.php - audiobooks available on iTunes and Audible, A1/A2 level, excellent explanation of grammar 🇵🇹
• 🆓/💰 https://www.practiceportuguese.com/ 🇵🇹
• 💰 https://www.semantica-portuguese.com - all-video course 🇧🇷

Flashcards

These courses primarily consist of interactive word/phrase translation:

• 🆓 Duolingo - based on flashcards (spaced repetition), A1/A2 level 🇧🇷
• 🆓+💰 Memrise - based on flashcards (spaced repetition) 🇧🇷🇵🇹

Book-Like

These courses primarily consist of a traditional book structure:

• 🆓 Wikiversity Topic:Portuguese - Two more different courses on our sister site Wikiversity 🇧🇷🇵🇹
• 🆓 http://www.learningportuguese.co.uk/
• 🆓 http://www.fsi-language-courses.net/Portuguese.aspx - old 48-unit course developed by the US government, public domain

Language Guides & Blogs

• https://en.wikibooks.org/wiki/Portuguese/Contents#Appendix_B_-_Grammar - this site’s grammar reference
• Wikipedia: Portuguese grammar - Wikipedia article; Wikipedia: Portuguese personal pronouns - tables of personal pronouns and possessives
• https://european-portuguese.info/ - pronunciation table, list of Portuguese-English cognates, etc. 🇵🇹
• https://www.practiceportuguese.com/vowels/ - interactive pronunciation table 🇵🇹
• http://www.cognates.org/research/mfcogn2.html - list of Portuguese-English cognates
• http://blogs.transparent.com/portuguese/ - language/grammar blog

Podcasts & Videos

• 🆓/💰 https://www.portugueselab.com/ - A1–B2 podcasts and videos 🇵🇹
• 🆓+💰 https://portuguesewithcarla.com/podcasts/ 🇵🇹
• 🆓+💰 https://www.practiceportuguese.com/podcast-home/ 🇵🇹
• 🆓+💰 https://www.portuguesepod101.com - podcasts and videos 🇧🇷
• 🆓/💰 https://portcast.net/ - podcasts 🇧🇷🇵🇹
• 💰 https://streamnative.com - videos 🇧🇷🇵🇹
• 🆓 https://www.rtp.pt/play/ - on-demand streaming TV from Portugal's national broadcaster 🇵🇹 (note: need to use VPN e.g. http://hola.org)

Dictionaries, Translators, Tools

• 🆓 https://en.wiktionary.org/ - multilingual free dictionary
• 💰 https://dictionaries.io - for  Macs: Wiktionary integration in Dictionary app 🇧🇷🇵🇹
• 🆓 https://dicionario.priberam.org/ - Portuguese dictionary 🇵🇹
• 🆓 http://www.conjuga-me.net/ - verb conjugations
• 🆓 https://translate.google.com/ - multilingual word and phrase translation 🇧🇷
• 🆓 http://www.linguee.pt - multilingual phrase search 🇧🇷🇵🇹
• 🆓 http://www.corpusdoportugues.org - Portuguese frequency word lists
• 🆓+💰 https://readlang.com - Chrome/Firefox extension with in-context word translation and flashcards 🇧🇷

Flashcards & Language Exercises

• 🆓 Tinycards - flashcard software (spaced repetition), super simple (good for small decks)
• 🆓+💰 Memrise - flashcard software (spaced repetition)
• 🆓+💰 Anki - flashcard software (spaced repetition), more advanced/complex
• 🆓 http://www.listeningpractice.org/start.php?lang=por - conjugation and listening/reading drills
• 🆓+💰 Português de Portugal 🇵🇹
• 🆓+💰 Fluent Forever app 🇧🇷

Speech

• 🆓 https://support.apple.com/kb/PH25639 - for  Macs: use the built-in Speech feature to read any text 🇧🇷🇵🇹