A Google Scholar profile is a very simple way of collating your publications so that others can find your work by searching your profile.
Website:https://scholar.google.com/ - Free
Video: Make A Google Scholar Profile In Under 3 Minutes! (YouTube)
Kudos helps researchers to promote their publication to general public.
Website:https://www.growkudos.com/ - Free
Video: What is Kudos? A brief introduction (YouTube)
A unique researcher identifier helps you to distinguish your scholarly activities from those of others with similar names.
Website: https://info.orcid.org/ - Free (Create your ORCID ID Via HKUST System)
Mentions in Library blog: https://library.hkust.edu.hk/sc/pids-orcid/
Video: A Quick Tour of the ORCID Record (Vimeo)