However, can you buy real estate without using any of your own money?

I would recommend you look for a good neighborhood to buy a multi family in.

@Eric L Conry you are essentially borrowing on your property to buy stocks.

Investment Info:Small multi-family (2-4 units) buy & hold investment.

In some cases, federal tax credits like those for low-income housing or economic development might also apply if the project aligns with certain goals.Instead of buying the land outright, developers often lease it from the tribe, which can reduce upfront costs and sometimes come with favorable lease terms.

or any experience buying homes at auction in Sac? 

for double closing you would need your funds to buy then sell it to end buyer at premium. there are transactional funding companies that can lend the cash for a fee.

Need to buy all again.Had stocked packed linen closet but not anymore..need to stock again. 

Investment Info:Single-family residence buy & hold investment.

Would you recommend their realtor team for the buying process or should I look elsewhere?