Job seekers get most confused by conflicting advice: whether to use one page or two (one page for under 10 years, two max for senior roles), if fancy templates help or hurt (most break ATS software stick to simple Word or Google Docs), what keywords to include (copy-paste the job description and highlight repeated nouns), how to handle gaps or unrelated jobs (don't explain gaps on the resume save for interview; delete old unrelated roles), whether to write a professional summary (yes, but 2–3 lines of hard results only), how many bullet points per job (3–5 strongest, number-driven achievements), PDF vs. Word (PDF is fine but test for scrambling), what counts as a "good" number (percentages, time saved, or volume handled), if tailoring for every job is necessary (yes, but takes only 10–15 minutes), and why they still get rejected after following all rules (often an internal hire or filled role apply to 50–100 jobs, not 5).