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

Email marketing is directly marketing a commercial message to a group of people using electronic mail email. wikipedia.org

Article marketing is a type of advertising in which businesses write short articles about themselves as a marketing strategy. A primary style for the articles includes a bio box and byline (collectively known as the resource box) about the business. wikipedia.org

Directory submission is an internet marketing process of submitting a websites to web directories in an effort to increase its page ranking. To maximize its benefits, internet marketers claim that it has to be done to hundreds of web directories.

Web design is the process of planning and creating a website. Text, images, digital media and interactive elements are used by web designers to produce the page seen on the web browser. wikipedia.org

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

A link wheel is a widely used internet marketing strategy. The basic idea of link wheels is to create a pattern of links which flow from one website to another which would finally link to a targeted website requiring promotion. wikipedia.org

Backlinks, also known as incoming links, inbound links, inlinks, and inward links, are incoming links to a website or web page. wikipedia.org

Affiliate marketing is a marketing practice in which a business rewards one or more affiliates for each visitor or customer brought about by the affiliate's own marketing efforts. wikipedia.org

Keyword research is a practice used by search engine optimization professionals to find and research actual search terms people enter into the search engines when conducting a search. wikipedia.org

Search engine optimization (SEO) is the process of improving the visibility of a website or a web page in search engines via the "natural" or un-paid ("organic" or "algorithmic") search results. wikipedia.org