Here's roughly how I learn languages:
- Learn the pronunciation (1 week), it would be handy to know the IPA alphabet for this one.
- Learn basic vocab and sentence blocks using flashcards of frequency lists (1 month). I use
http://memrise.com/ for that
- Get a grammar book to familiarize yourself with some of the rules. I usually ignore the exercises.
- Start one-on-one lessons on
italki.
On top of that, watch movies and series in the target language, preferably with original subtitles (so you can focus on the pronunciation).
This method usually gets me to a B1 level pretty quickly.