Pescadore is absolutely right: They have a long learning curve!! Especially if you've gotten comfortable with your Bounty hunter, as you say. You might hate it, pull your hair out, and wish you'd gotten the easier machines like the garrett. So my advice to you, before you go to the homesite (which are potentially junky, and more like a "relic" site, rather than a "coin" site), I would take it to some-place easy, and force yourself to dig 100 clad coins first. You know, like an easy modern sandbox, or front yards of homes (friends, neighbors, etc...) that have never been hunted. Because since the SE is so tone-specific, and sounds like a flock of sick geese, it's not the type machine you're going to take out to some sites and expect to learn it right off. The type site one needs to learn the Explorers, is to start somewhere that isn't too junky, yet clad coins abound (side-by-side signals to slowly train your brain).
Another way is to go out with a proficient user. Ie.: someone who routinely comes in with the old coins (and not just a sand-box hunter). Have him flag some signals that he suspects have potential to be an old coin. Watch how he swings. Listen to what he's trying to isolate. Watch how he pinpoints. Watch listen to other signals he elects to pass up. Flag signals for him, and see what his analysis says (ie.: why he'd chase or pass it, etc...).
