Looking to outsource some work

I'm looking to outsource some of the tasks of my side project. I'm thinking that adding some more 'human power' will motivate me to work harder too. I work full time, and some days I'm pretty spent at the end of the day—and don't want to come home and code even more. So, I've decided to 'explore' the idea of perhaps hiring some help.

The only thing is, this will require me to share the source code of the project—which I'm a little nervous about. I've never hired on Upwork before, so I'm new in this area. Looking for some advice on how to find help, freelancers, etc.. on side projects. Thanks!