Can you spot a typo from a mile away? Do errant apostrophes give you hives? If so, read between the lines: Starting a proofreading business could be your ideal money-maker. In the business world, an ad, brochure or business letter that contains errors can make a company look unprofessional. Small companies, especially, need a second pair of eyes to review sales and marketing materials before they hit the streets. That's where you come in.
Proofreaders generally charge $5 to $10 per hour and sometimes charge a flat fee for certain projects. You need an excellent grasp of the English language, punctuation, grammar and spelling to make it in this field. If you do a good job, the companies you work for will tell other companies about your services.
In the meantime, some local advertising can help you get your start. Target businesses with fliers about your proofreading prowess. With this business, your overhead is virtually zero--just enough money to buy a few red pens for editing.