Finding people for free is possible and not too difficult. The process is getting the important information from someone you know to purposely reach out to people who may fit your criteria for a certain project. Below are some tips for people search.
1. Networking
It is one of the best ways to find people for free. Networking is having a group of people who have diverse backgrounds and skills. These are usually people within your social circles and
professional connections. They have the ability to refer you to someone in their network who could be perfect for your project if they happen to know anyone who has the talent you need or in the field that you need help from.
2. Look at professional associations
This is another good way of finding people for free. Different groups are made up of members from different professions and interests, including yours; this makes it easier for opportunities to find you that may be hidden otherwise.
3. Read books
Reading may not be the best option for finding people for free, but there are many books that would help you in identifying your industry requirements and people with the skills and qualifications to fill them. You can also find people who have left their companies for a new opportunity and now know exactly what you need. After reading the book you will surely find some contacts and people who would be more than willing to help with your project if they are available.
4. Seek advice from friends and family
You can ask your friends and family for help if you are looking for people to do a particular job. You do not have to be the person doing the job; asking your friends or relatives may help you get in touch with someone who wants to do that particular job. For example, if you are looking for a graphic designer, ask a friend or relative who has one and ask what it is like working there. Ask them 
how they started their career as a graphic designer and where they got the information they needed to start their own business. These people usually have knowledge of everything, so you will be able to get valuable information through them.
5. Internet
The online community is a great resource for finding people for free. It is possible to speak to professionals from all over the world, but it takes a lot of time and effort. The first step would be to define who you are looking for, such as someone with certain experience or skills. Then you can use search terms that would bring you closer to your goal; for example, if you are looking for an experienced graphic designer then use terms such as “experience” and “graphic design” in the search engine of your choice instead of just “graphic designer”. You will find some people who have been available in the field and may agree to help with your project.
6. Online job boards
On online job boards or platforms such as from this site, you will find a lot of people who are looking for work. While there are some people who are looking for clients, many are actually looking for projects that they can work on in their spare time. This can be a good way to get the help to build your own brand name and get noticed by potential employers; while you may not be able to do everything yourself, you can still provide a great product and make it look as if you have.