Investment home purchased and held inside IRA, HOW?

[Shannon Wood]

I have a roth and a traditional IRA, combo of 100K w/ 15k of it in cash. In section 103 of the GRI (Graduate of Real Estate Institute), I'm almost 100% positive I read that you can purchase an investment home and hold it inside of your ROTH. I'm now unable to access that material, it was an online class, and I can't seem to find any information on how that process works and what the requirements are. If anyone has info, please share. If not it will take me nearly 3 more years to save for my first deposit for an investment property. TIA