Some additional cautions:
It is recommended to not fill them more than 3/4 full. This allows the oil to expand a bit as it heats up.
And make sure that they set level - both when lit and when not. The oil can and will leak/wick out the burner if given a chance. So take extra care when packing them away in your vehicle, or in camp. If it is tilted enough, you could end up with oil soaked into everything near by.
As already stated, don't turn that wick up too far! You might get a little extra light for a bit, but it will start to burn dirty/sooty, and coat the inside of the glass with soot. And cleaning the inside of the glass globe is a messy job. That soot sticks to everything, and is oily ta boot!
Trim the wick when needed - semi often depending upon usage. When the end gets crusty/black, it probably needs to be trimmed a bit. That cruddy buildup interferes a bit with the flow of oil to the flame, and also spreads it out more - causing it to sputter and create soot more.
Try not to let it ... burn dry. If it runs out of oil and burns out, the last thing it does is burn up a little extra wick - that usually extends above the metal burner. This eats up your wick faster than necessary, and also requires you to trim it to get it back to burning right.
When you raise the glass globe with the lever to light it, be careful when letting the globe back down. It is very easy to slip and let it drop. That has cracked and/or broke a lot of glass globes.
Have fun experiencing that gentle glow. And then, if you are getting curious about such things from history past, look up a book called A World Lit Only By Fire. It's all about the thoughts, ideas, and philosophy that developed back when the only "artificial" light was fire light. Interesting reading.
Just some humble thoughts to share. Take them as such.
Mikey - yee ol' grumpy blacksmith out in the Hinterlands