Piotr Mrozinski is the Head of Customer Acquisition at LinkedIn for Central and Eastern Europe. He discusses the four key ingredients of social selling: creating a professional brand through one's resume and reputation; finding the right people on LinkedIn; engaging others with insights by adding value before asking for anything; and building strong relationships by staying on top of changes and being personal. He suggests some immediate actions people can take like revamping their profile, cleaning their network of spam, posting valuable content, and accessing Sales Navigator to improve their social selling skills.