Although the rest of this material is directed to word processing, the same principles apply to typing - only it's a lot more work on a typewriter. The basic requirements for a word processing business are a computer with a word processing program, a letter quality printer and a dedicated working area. It can be a 24 pin dot matrix for high quality printing AND graphics. Note that this business was conducted with typewriters a few years ago, but the most expensive typewriters cannot compare with even low priced word processors of today. A good typist should be able to produce a professional looking business letter in a few hours.
Many professionals never use more than just some of the average word processing program can do.
For example, the major programs have 100,000 word spell correctors, while some of the smaller ones have 40,000 or so. Most computer programs also have version numbers, which indicate how new or old that particular program is. Once you have a word processing program, however, updates are fairly inexpensive. With a standard, professional word processing program, you can not only prepare final documents, you can prepare manuscripts for publication. If you give your client a disk with his final draft, he can forward that to a publisher who will run THE SAME DISK on his computer to typeset the entire manuscript.