@Shwetha Pindikuri,Assuming an FHA loan with a second mortgage can be tricky, but it’s definitely doable with the right lender.

Is it better to have a mortgage on a rental or a primary? 

I wouldn't say you're going to learn as much going through an online course as you would an in-person one, but it is a lot more convenient. 

.: I'm thinking of investing in some notes with Capella Mortgage.

A lot of the sites will have large minimum orders but something like PropStream lets you do single properties, find comps, see past sales, active mortgages, etc. 

I put the first, largest mortgage in under the loan option in the BP calculator.

What is the best way to go about finding these property listings online before they go to the auctions?

A lot of that is referral based or people find my site online, organically. 

;(- if as-is value is less then the balance on the mortgage + arears OOOPS you need to have the owner work with the bank, you as the investor buyer AND a short sales expert often an agent work the tedious and usually failing short sale process. 

Oil prices remain a huge X factor, and housing prices (at least with respect to rents) are being held back by the most supply EVER being built and coming online here in 2024.