QUOTE(gogo2 @ Sep 27 2013, 08:45 AM)
Wow, bad advice. Please don't spread this around. Later a lot of Note 3 battery life degraded.

What are you talking about?
It degrades only if you do it constantly.
I was responding to his question based on first time usage. Followed this on most of my phones and I have never faced a battery issue. Maybe you can refer to the guides online to better equip yourself with the knowledge.
Anyways, when it comes to android, it is hard to kill your battery because when the battery is at its lowest, the phone would shut itself off. the warning is given when the battery level is about 20%.
This is done just for the calibration of the battery. After a few charging cycles and the battery is running at it's full capacity, then you can charge it anytime, and it's best to not allow it to completely drain, unless you want to recalibrate it , with is usually done once in 2 months or so.