Fluent in 3 Months (Book)

Fluent in 3 Months by Benny Lewis will change the way you think about learning a new language, any language. Not only in theory, this book will give you practical tips and tactics for each different stages of language learning. A must read for anyone who wants to become fluent in a new language.

Duolingo App

Did I just recommend Duolingo, on Imgur, for the 100th times? I'm sorry but I can't not recommend this. Duolingo is the best app for your smartphone to learn the basic of languages. And it's 100% free! They currently have over 16 languages available to learn. While Duolingo won't make you fluent, it will definitely make you ready for the next step.

Forvo Pronounciation Dictionary

While reading words from a different language, especially the ones that have confusing pronunciation (like English), you will want to hear how those words are pronounced. Forvo can help you with that. Forvo is a pronunciation dictionary where you can type a word then it will return the pronunciation audio.

Memrise App

There's this method of learning languages called SRS (Spaced Repetition System) where you will get reminded of a word over time before you can forget it. After a certain duration, then you'll remember the word forever. Memrise is the app that will help you learn languages with SRS.

HiNative App

What a day to be alive. With HiNative, you can directly ask questions to native people about their language and culture. Let's say you're confused about the difference between two words in French, you can just ask someone from France to explain it to you...for free.

Lang-8

Lang-8 is a platform where you can write something in a language you want to learn, and someone native will proofread it. It's an awesome way to be fluent in a new language because you can train yourself by writing and you'll get to know how you can improve.

Anki SRS

The main idea behind Anki is exactly the same with Memrise, learning a language with SRS. With Anki, you can create your own deck of cards (but there are premade decks too). Some people like Memrise better because of the interface, but some people prefer Anki for flexibility.

Italki

Lang-8 and HiNative are great because they're free. However, for serious people who want to learn fast, both can be a bottleneck because there is no dedicated tutor just for you. If you don't mind spending some money to hire a dedicated tutor for hourly rates so you can learn much faster, then Italki is for you.

HelloTalk Language Exchange

HelloTalk is a chat app made to exchange languages with people around the world. Pick a language to learn, and you'll get to practice with a native speaker via live chat or even video call.

TuneIn Radio

This one is different from the rest. It's not a learning platform, but an online radio streaming app. Here's the idea: if you want to become fluent in a language, you have to "live" with it. You have to listen how people talk with that language in real life, for hours per day. Or listen to music in that language. For that reason, listening to a local radio station will definitely help.

Source: http://starterpack.me/learning-new-language/