When you are working through multiple learning resources on the same subject, you will sometimes find that two books, articles, or course materials give different answers to the same question. The first useful step is to write down both versions exactly as they appear, along with the title, edition, and publication date of each source. This gives you a clear record of the disagreement rather than a vague feeling that something did not match up.
Once you have both accounts in front of you, try to identify the specific point where they diverge. Often the difference is narrower than it first seems. One source might use a broader definition, refer to a different version of a standard, or assume a different starting condition. Writing a short note that names the exact variable, term, or step where the two accounts part ways makes the conflict much easier to discuss with someone who can clarify it.
A practical way to keep these notes organized is to maintain a single log where each entry contains the topic, the conflicting claims, the sources for each claim, and the date you noticed the problem. You do not need to resolve every entry right away. The log serves as a running list of open questions that you can bring to a teacher, tutor, or professional when the opportunity arises. When you do get an answer, record it alongside the original entries so you can see what was unclear and what was settled.
If you later find a third source that supports one side of the conflict, add it to the same entry rather than starting a new one. Over time this log becomes a personal reference that shows which areas you have already clarified and which still need attention. The goal is not to eliminate all uncertainty immediately but to keep your unresolved questions visible and specific enough that someone with more expertise can give you a direct answer.