Hey Cromulent and congratulations on your new mech mod!
Mechs are really cool once you get to know them and since you mentioned it was your first ever, I wanted to take the time and give you some tips to keep you safe.
No1 would be to definitely look into Ohms law if you have not already: Mechanical mods don't have all the safety features as variable wattage mods do, so it's critical you keep an eye on your battery discharge rates, battery amps, atomizer resistance and most importantly if they all play nice together. Having a battery discharge more than it is rated to could spell disaster.
No2 would be to keep your contacts clean: Mech mods rely on conductivity more than anything and they mostly feature either stainless steel, Silver, copper or Gold contacts. Over time, these will deteriorate and get dirty, this is where voltage drop is evident so cleaning your contacts regularly is good practice, as well as the rest of the mod also.
No3 is cleaning of the device itself: When building, scraps of wire can sometimes fly around and lodge themselves into your mod. If you aren't careful, they could cause a potential short etc. This could also happen when carrying the device in your bag, pocket or jacket. With that being said, please make sure you keep everything as clean as possible
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No4, building: There's one thing I tell anyone who wants to start building is to get an Ohms reader. This gives you a very accurate Ohms reading which will help in building but most importantly, it's safe! Building on your mod can be dangerous, so I always recommend building on an Ohms reader and some even allow you to fire the coils and check for shorts.
Finally, No5 is Always locked your mod: Seriously, if you are not using it just lock it. the last thing you want is the mod going off in your pocket until the coils burn the cotton. other than that, if you decide to be brave further down the line and build on your mod, you will probably burn a finger or two if you're not careful. I know it sounds dumb but accidents happen and trust me, those burns are not fun!
I hope this helps and good luck with your unregulated adventure!
Yianno.