It might also help to get stories of failures and why they failed. I will give you mine.
I met someone online who wanted me to partner with them on a business. I was interested, but later learned that what they wanted from me was illegal. At that point, I bowed out.
A not for profit project that I worked on turned sour for me and I bailed. Looking back on it, I concluded the founder was looking for a step and fetch to provide the time and energy for the project they could not spare while also working full time and raising a family.
If you just want a step and fetch, don't pretend they are a partner. Pay someone to do menial tasks that you simply don't have time for.
Make sure there is something in it for them. Both of the above examples were looking out for their interests. Neither really thought about my side of things. Screwing someone over is not a means to lay the foundations for trust and a long term partnership.