Glad to see someone who believes resume writing business idea is a thing. Let us understand this in more detail.
A resume is the summary of your entire academic qualifications and extracurricular skills. You have to mention all your achievements in a crisp form to be able to get fit into one or two pages. It is an essential documents for your employer to make a decision about hiring you or about the department in which to hire you. Resume making is no rocket science. It has a specified universal format. You may not know but there are people who are unsure about resume writing format. They keep googling to find the appropriate format and way of writing a resume. Even after that, they are not confident about what they come out with. They need someone either to guide them or rectify them. If possible, a freelance service is also appreciated.
If you are someone who is proficient with such kind of formal writings, you can give it a try as a side business. Of course, it cannot be a full-time business, but will definitely let you make some extra bucks in your free time. Apart from that, it is a noble job to help others. There might be people around you who are capable but fail to create a good impression in job interviews. Your service might help them to get a good job. Above all, you can make a good use of this skill of yours.
When and how
Talking about when to start working on resume writing business idea, answer this question. Are you someone whose friends, family or relative keep asking for such bits of help. If yes and if you are always able to help them successfully you can consider this a side business. You may not keep getting work all the time, therefore do it along with your existing job. The best part of this business is that it will not take hours of your day. You can choose whenever you want to work.
Talking about how to start? You will need mouth publicity to get more assignments. A nicely executed job will itself advertise for you. At the beginning ask your peers to get you the clients. Make use of social media to spread the word. Mostly target on young graduates because they are the ones who are in more need of your help. If you wish, you can also provide training on resume writing to empower others.