Step 1: Watch anime on crunchyroll.com and turn the subtitles off by right clicking on the video (some videos don't have this option)
Step 2: When you hear a word repeated often during the show, pause the video, try to type out the word and look it up online using Jisho.
Step 3: Use Evernote to add the word to my vocab list. Put in the hiragana AND kanji form of the word and the definition in your native language.
Step 4: Every time you add a new word, you'll see the other words on your list. The repeated exposure to these words will eventually cause them to be etched into your memory.
I recommend that you watch Kaasan - Mom's Life on Crunchyroll since the language used is simple and it should be easy for you to pick out individual words.
Add Evernote to your Japanese language arsenal: evernote.com