+1 to Flyer's tip. You've selected a good beginner's rig. The RSST is pretty easy to setup. I vape enough citrus juices that I prefer to have a glass tank that won't crack, but I still really like the RSST for price to value and ease of setup.
You'll see lots of different opinions on the best way to setup a wick. This will likely include tips that you shouldn't use mesh as a wick. What I say is experiment. There are a ton of different wick styles out there, including myriads of different mesh setups, silica, wire rope, cotton, ceramic, and combinations of the above. Mesh can be a bit of a pain to learn. Watch some videos and be patient as you're setting it up - you'll likely burn a few coils and spend a few hours before you get your first successful setup, and even then it probably won't be that great of a setup.
What works for me in a gennie after a great deal of experimentation: I prefer a 325 mesh tube style wick, lightly torched. I typically cut a piece of mesh that is 5/8" by 1.5". I lightly torch, until the mesh is glowing. I pay a little extra attention to the edges. This takes all of about 15 seconds with a decent chef's torch. If you notice any "hairs" on the edge of the mesh, its a good idea to trim them. I then make a very small fold on one edge of the wick and the top of the wick. Then I roll the wick around a needle. For the RSST without the insulator, a 14g needle works well. The side folded edge should be on the outside of the wick when you finish rolling, though the fold should be facing towards the center of the wick. Does that make sense? I hope so. Its important to make sure that the wick is very tightly rolled on the needle. It takes a great deal of pressure to accomplish this.
Next, I pull the wick off the needle, put it on an unfolded paperclip, and retorch the wick briefly, paying particular attention to the seam.
Next its time to test fit. I tend to like shorty wicks - the wick extends about 1/4 of an inch into the tank, and is cut of at about a 45 degree angle. Don't cut off the folded top edge! Trim the wick to length using a pair of scissors. Then put the wick back on the needle. It takes a bit of fiddling because the scissors have crushed the bottom edge of the wick.
Once back on the needle, wrap a coil. You'll need to eyeball the gennie and the wick so that the coil is wrapped at the right place on the wick and wrapped in the right direction to make fastening the coil to the atty easier. On gennies, I like to have evenly spaced coils. For the RSST, try a 3-4 wrap of 28 around the 14g size wick for between .7 and .8 ohms IME. Don't take my word for it though - you need to have some way to measure the actual resistance. If not enough, add wraps. If too much, increase the gauge of your resistance wire. With the coil and wick still on the needle, I test fit again and adjust the coil as needed. Hook the terminals up, pull your needle out, and very carefully test fire. I tend to use very short pulses to gradually bring the wire up to temperature and to help me identify hot spots (you can see these as spots on the wire that are visibly brighter than the wire next to it). Poke at your coils to move them ever so slightly to remove the hot spots. I tend to prefer to do the poking around with the mod off (as opposed to firing at the moment that I am poking at the coil). This process is usually a bit easier if you use a partially discharged battery. Once you've removed all the hotspots, drip a bit of juice on the coil and test fire again. Assuming it steams nicely without hot legs at the top or bottom of the coil, fill your tank and vape away. If you're getting hot legs, it usually means you have a short/hotspot in the middle of your coil somewhere and need to fiddle with your coil some more.
Hope this helps.
