:P Hubby works at UPS 15 hrs a week for incredible insurance, he owns and landscaping business, makes furniture, does odd jobs and recently buying at auctions and reselling.

Often times you can look at comps for a property and even though the county has assessed the value as less than the taxes it may have greater value in a resell. 

Generally speaking SFH are more ideal and easier to resell and rent in my opinion.

The strategy is basically acquire the property, make it habitable, put a renter in for two years and then continue renting or resell.

Why in the world would it be illegal for you to buy and resell properties because you hold a license?  

@Rob Smith - all great points above.One thing that I didn't see mentioned is becoming a private lender for real estate investors.IMHO - this is the fastest way to grow you limited seed funds.You can easily charge 1-5 points PLUS 12-15% APR for short term loans that are secured by real estate.I personally use a handful of private lenders to fund my wholesale business [I don't do assignments, I close on each property before reselling].I never pay more than 65% LTV and give the lender a Promissory Note along with a Mortgage.  

It's listed for 89900 and I ran the comps and I was thinking it could resell for 120000.

I invested in land (mostly for flipping or re-selling with owner financing) but I've thought more than once about building on some of these better lots that acquire.

I suggest that almost any mobile home you purchase that is located in a pre-existing park should recoup all of your money back within one year or less after reselling via payments.

I go to garage sales, estate sales, and so forth and I buy items and resell them on eBay.