I also second the effectiveness and value for money of the ANR headset kit (Google it as there are a couple of suppliers) upgrade of a passive headset.
I have a Zulu 2 and a David Clark passive headset upgraded with an ANR kit. Both are equally effective at noise reduction to my ears, but Zulu much more expensive.
DC very robust, and a bit heavier. Zulu sufficiently robust but did I mention expensive?
You can by a second hand David Clark, and get the kit and fit it yourself, and be an excellent system for not too much outlay. ANR kits suggest you also have a gel ear seal on the headset.
Or buy a passive DC new or secondhand, till you see how it is, and fit an ANR kit later if all goes well with training.
As said above, do please protect your hearing from the start. Once it goes, it is gone. I know now and wish I had this advice when I was young and bulletproof.
John