Popup Chinese (Google it), Pleco for your phone, and some dedication. That's all you need, and you need all of it!

PopupChinese is very good, as mentioned above. In the listening space, there is also ChinesePod and Melynks - which you can both find on iTunes.

Pleco is a fantastic app dictionary. Qingwen is another option. http://nciku.com is a good web option.

For more visual learning, http://yoyochinese.com has hundreds of videos to watch.

New Practical Chinese Reader, as mentioned above, is solid [but a bit dull].

Memrise is also a super vocab tool.

As everyone says, the Pleco app is required these days.  Super helpful.

Chinesepod.com is also very helpful.  I have a membership, so I'm not sure what can be accessed for free, but you should try it out.  It was developed by linguists, and all the dialogs are very up-to-date and true to life.  Lots of fun and a great on-line community.  By now, they have many thousands of lessons that are available, and more done every week at various levels.  If you're learning on your own, this is the best overall resource.

Uncle Matt's video are very useful. Here's the link :

 https://www.youtube.com/watch?v=bnWVVJQfb3w&list=PLL2CpgsJZerTW18DitXYwgmeEs0byQ7jF

Forgot to tell you following or mimicing Chinese song is another way to imporve your accents and  pronunciation true.