In as much as your business or profession is genuine then it is worthy of promotion (free/paid). Promotion of Business or Profession is not free on most platforms but only one platform offers free business promotion (using videos or pictures).
1. You can upload Videos promoting your business or profession (as many as possible)
2. You can upload Pictures promoting your business or profession (as many as possible)

Visit www.biizmart.com and start up!
See www.biizmart.com/getting-started to get started!