Hello! Newb here, have some questions

Hello everyone. I bought my first vaporizer just yesterday, and haven't smoked a single cigarette yet so it's working as intended.
I have a few questions so this is going to be long, sorry about that. The vape I got is the Joyetech ego ONE Atomizer. On the box, it says 2.5ml and 1.0 ohm. The battery is the long one, 2200mAh. The <a href="http://www.vapininthecape.com/eliquid_c_7.html”>liquid I got is flavored like coffee and it has 12 Mg of nicotine, since I used to smoke an average of 25 to 30 cigs a day.
Ok then. First question: is it okay to recharge the battery with the USB cable of my cell phone? Whether is the one that goes directly in the plug or the one that goes into the computer's USB port. If it's not, then how do I properly recharge it?
Second: do I need to replace any of the components within given time? This is something that the seller did not specify or know about. This is because there are no sellers where I live, this is the only place that had this kind of thing. Therefore, I don't really have any customer support here.
Third: how do I safely clean it? I have no idea what's right or wrong to do so I better ask. Is it okay to switch <a href="http://www.vapininthecape.com/eliquid_c_7.html”>liquids between refills?
Fourth: I noticed that when I vape longer than usual, the head starts to heat up, if I leave it alone for like 30 minutes, it's back to normal. Is this okay or is there something wrong?
Other than that, I have had no problems with it, and I'm loving this stuff. It's incredible for me that I don't feel the need to smoke a cigarette anymore and that my clothes don't smell like a freaking ashtray. I want to keep this going, please help!

Thanks for your patience!

submitted by /u/JanickGers
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