With someone without experience I would recommend buying a well maintained small multi family home 2-4 units in a solid A-B area. 

However, if it's your house, and it's in a good A/B area, and the rental comps have ceiling fans or other amenities that your house do not, your property might not attract the more qualified tenants. 

Everyone knows what it takes to have 6 pack abs but not many people are disciplined enough in diet and exercise to have them.

I think the lots would do well and as others have mentioned, maybe putting a used RV on one of the lots (a tow trailer for $10-20k for example) would be a good A/B test to see which would be more profitable.   

The cons of this are that you will have to fund the A-B side of the transaction.

I closed on a nice house in a B to B+ neighborhood in Ontario, CA.

Blue, Green, Yellow, Orange, and Red are A, B, C, D, and F, respectively.

I would /will only buy  a S.F.H in A ,B areas only  do all the rehab up front .I  have contacts to help in the rehab  plus my own knowledge can get the job done on a tight budget .Then I fire it up start the rent I keep all my SFH in tight area . 

They have a great track record and seem to do well there but I may want to try a B class at some point.  

In AB we now have 4.8M people, 220K of those moved here last year.