Tons of free information online on how to do this, what to look for in land, where to buy it and then resell it.

I'd recommend reading the ones that specialize in the area you want to focus on (i.e. buy and hold, mobile home park investing, buy and resell, etc). 

If the properties are truly bargains then buy them and resell them at a profit.

Aussie guys hooking up with Bad US guys and .. they were buying props for 10 to 20 then reselling them for 80 to 120k all in the worst areas of the US..

I've done improvements and can resell or refinance.

I don't see that it would add appreciable value for the appraisal or for rent, AND when you go to re-sell you would probably want to tear all that work out and put it back how it is now as your typical buyer is probably an owner-occupant and would prefer it as it is now.

Obviously, I don't know anything about your finances, so for all I know, you may have a few million in the bank, and this project is just a fun experiment that wouldn't even be a drop in the bucket if it all turns south...but, regardless, you'll want to model out what would happen if this project crashes and burns...As you may know, managing a rental in a D to F area (or even a C area) is usually not recommended (for many reasons), and funding a rehab with credit cards is also usually not recommended (again, for many reasons). ...even highly experienced investors often won't touch anything lower than C grade because of all the difficulties of managing and re-selling them...If you're dead set on rehabbing the place and keeping it, I'd strongly suggest studying up thoroughly on the local rental market and tenant pool (e.g.; rent medians and lower and upper bounds, typical days on market before securing a tenant, local vacancy rates, tenants' typical income, education level, employment opportunities, credit, and rental history).

And it gets around any title seasoning issues when using certain loan programs.I once established a new LLC in order to aquire and quickly resell a house.

Here where TIC is appropriate if a resident fell out you would make more money reselling the unit because it would have appreciated.

In TF the wholesaler will actually close on the purchase and immediately resell for a higher price.