Firstly, good for you for seeking advice and then (so it would seem) following it in terms of staying safe for tonight.
The mech mod you have comes with an obligation (to yourself and, potentially, others near you) to do the learning and be able to maintain it (as it would any of us). Susan's links above are a good starting place.
Now, don't want the hassle? Cool beans. Invest in a regulated mod with protection for things like shorts and battery drain. You'll get just as good a vape - plenty of devices can handle that .3ohm build just fine. For many, many vapers, they're preferable to mechs and they invest their time and energy in the atty and the build.
As for the atty/build you have there, well, that comes with an obligation, too. Ohm's Law, short troubleshooting, meters, wicking, and on and on (again, reference Susan's links). Big headache? Too much to deal with? Could be, might not be. That's up to you. If it is, there are several subohm tanks out now that get you in the realm of what you have in your hand right now (or rather, on the desk... with the battery taken out... because of some issue related to the aforementioned hassle stuff). Kanger Subtank, Aspire Nautilus, Joyetech Delta II - good, good tanks for more "extreme" vaping. The subtank and delta also have rebuild platforms so you can dive into build on them if you want.
Don't mean to come off all preachy on ya (prolly too late, tho) - just want you to get what you want out of vaping without incident and/or getting stuffed up like you are now.