It’ll be simple to use!
You didn’t say if you got a gray with a 9x8 concentric coil or black one with a “Widescan” (DD), but either version will accept any of the 4 pin coils and be great at all around land use. They’re fairly deep, too. I do recommend that you use concentric coils with it for best discrimination, which is what Tesoros are all about..
If you’re going to be hitting really trashy locations, invest in one of the 4 pin 5.75 concentric coils for it. Also, unless you’re hunting in very mild soil where targets are few, keep your sensitivity setting low enough to get solid, smooth signals on large, shallow coins like quarters and halves. Experiment with the quarters on the surface and you’ll probably hear what I mean. Especially with the larger coils, sensitivity needs to be lower on shallow, large coins to get a good audible signal.
Another thing - learn to “power balance” the ground balance after you’ve used it a bit. Plenty of info online about balancing it that way and it’ll give you maximum depth when set up that way - which is more “negative” than setting it by the book. Vaquero is a very good detector - have fun!