There is a recognisable pattern in marketing forums: someone lists the five certificates they have earned and asks why they still cannot get hired. Course-collecting is common, understandable and usually counterproductive.
Why stacking certificates underperforms
Beginner courses overlap enormously - your third introduction to the marketing funnel adds nothing your first did not. Each certificate also signals the same thing to an employer: this person studies. None of them answers the question employers actually ask: has this person done it? Five certificates and no portfolio is a weaker application than one course and three real projects.
When multiple courses make sense
Sequential, purposeful stacking works: a broad foundation first, then later a specialist course that matches where your career points - advanced paid media, e-commerce, analytics. That is deepening, not repeating. Free platform certifications (Google, Meta, HubSpot) are also worth adding around a core programme because they cost nothing but time, as we cover in which certifications matter.
The test before buying another course
Ask: will this add a capability I do not have, or just another PDF? If your gap is experience - and for most course-collectors it is - another course will not fix it. Work will. That is the reasoning behind Digital Marketing in Practice: one programme covering the whole stack once, properly, with a guaranteed 12-week placement that converts study into employment evidence.
The bottom line
Take one comprehensive, practical course and finish it with a portfolio and real experience. Add free certifications for signalling, and save the second paid course for when your career tells you which specialism to deepen.