1. Conditional clauses: "especially if the advice matches their personality or learning style" uses a conditional clause to explain when success books might be useful, adding depth to the answer.
2. Comparative structure: "more or less relevant" and "not get as much out of them" use comparative structures to show differences in usefulness for different people, which makes the answer more nuanced.
3. Present simple tense: The answer consistently uses the present simple tense (e.g., "depends," "benefit," "matches") to talk about general truths and habits, which is appropriate for this kind of discussion.
4. Example phrase: "For example, someone just starting their career..." introduces a specific example to clarify the point, which is a good strategy for IELTS Speaking Part 3.