Wikipedia defines a virtual assistant as “self-employed and provides professional administrative, technical, or creative (social) assistance to clients remotely from a home office.”

Skills required: 

1. MUST be excellent at listening and following instructions
2. Able to multitask
3. Self-driven and focused
4. If your clients speak English, you must have great English speaking, writing, listening skills
5. Creative and resourceful

Hardware:

1. Computer, laptop
2. Reliable internet connection

Transcribers or transcriptionists are responsible for providing communication access by converting spoken language, recording, videos to text.

Skills required: 

1. Listening skills
2. Good vocabulary
3. Typing skills
4. Good initiative and time management

Hardware:

1. Computer or laptop
2. Reliable internet connection
3. Good old headphones

According to study.com, "English as a second language (ESL) teachers instruct students whose first language isn't English, in reading, writing and conversing effectively. These professionals are also sometimes called English for speakers of other languages (ESOL) teachers."

However, you will need a relevant bachelor's degree, relevant ESL training, and an ESL teaching license.

Freelance writers do three things: they research, write, and proofread. That's the gist of what a freelance writer does. Now the skills and competence required vary. If you're writing high-caliber financial, tech, or scientific articles, then, of course, you should have suitable ammunition. If you write lifestyle or current affairs, you should have a pulse on what's going on in the world right now.

Skills required: 

1. Excellent English skills (articles required are mostly in English)
2. Great vocabulary
3. Knows the audience
4. Creative
5. Flexible and versatile
6. Must be able to meet deadlines
7. Must have the patience for fickle clients

Hardware:

1. Computer or laptop
2. Reliable internet connection

"A graphic designer creates visual concepts to convey information through photos and art. A graphic designer creates posters, bus wraps, billboards, packaging, logos and marketing materials, depending on the industry—graphic designers work at magazines, advertising and marketing agencies, and more. Selecting photos and typefaces, and developing layouts for advertisements, annual reports, brochures, magazines and other projects are also part of the gig." (Source)

Skills required: 

1. Creativity
2. Eye for design
3. Excellent time management, quick turnaround
4. Must be able to meet deadlines
5. Must have the patience for fickle clients

Hardware:

1. Computer or laptop
2. Reliable internet connection
3. Graphics editor software such as Adobe Illustrator, Photohsop, Lighroom or GIMP