Influencer marketing is a form of marketing in which focus is placed on specific key individuals (or types of individual) rather than the target market as a whole. wikipedia.org

Social media marketing refers to the process of gaining traffic or attention through social media sites. wikipedia.org

YouTube is a video-sharing website on which users can upload, view and share videos. wikipedia.org

Twitter is an online social networking service and microblogging service that enables its users to send and read text-based messages of up to 140 characters, known as tweets.

A data entry clerk, sometimes called a typist, is a member of staff employed to type data into a database using a keyboard. The keyboards used can often have specialist keys and multiple colours to help them in the task and speed up the work. wikipedia.org