Something else to remember is that while you need to have a solid education (see above), you also need to know that you don't need a god-level knowledge. The NREMT tests for entry-level knowledge and skills. That being said, the better you know the stuff you're being taught and guided through in class, the more likely you'll pass and have an easier time learning the job. These skills, while pretty basic, are going to be the foundation upon which you will build further knowledge and will be the very basic skills you'll do for EVERY patient you encounter in the future. Do it long enough and you'll kind of forget you're doing things as it'll be pretty much second-nature.
As to the NREMT exam itself, yes, it's an adaptive exam that will test your limits. It will get very hard. It's supposed to. You will answer some questions incorrectly. That's expected and part of the exam. There will be no "trick questions" and all will be pretty straightforward. You just have to read the question, read the answers, re-read the question with the answer in mind (look for key words or phrases that you might have missed), and then answer the question. There will usually be an answer that is correct for the way a question is commonly misread. That's why I suggest you re-read the question after reading the answers. Any answer that you'd say "yeah, this is correct in this (somewhat obscure) situation (that's not part of the question)" that's not going to be correct. A correct answer will clearly answer the question without ambiguity and all parts of it will be true. If you get any "Select All That Apply" or SATA questions, remember to treat EACH ANSWER as its own T/F statement and each must be 100% true to "apply" or it's false and doesn't apply. There can be one, two, many, or all that can be true. That's why you must go through each individual statement and treat it as a stand-alone statement (T/F).
This is doable. Very doable. Using this system I passed the NCLEX-RN (much harder exam) with relative ease... but I also had a SOLID education in nursing to do it. If I ever have to go back and redo the NREMTP exam, I'll use the same system for that too. It works.