Where to get wholesaling contracts?

[Lee Yang]

I was wondering, I see a lot of people online saying they offer FREE wholesaling contracts of their own. This is leading me to think that as long as I understand their contracts, I can use them. Can someone educate me on this?

Does contracts vary from state to state?
Should I get my contracts ONLY from the local real estate attorney that I am investing in?
Speak to a local real estate agent?

Thank you!