G'day Susan,
Since nobody else has "got up to dance", I thought I'd share what little I know - at least it might give you some indication of "where next to Search".
Edited later: Seems I took too long to type this - onya, Redwing. I'll still include my thoughts below - they might fill in things a bit for you......
Wrap - shorthand for "Wraparound Mortgage" - as the Investor, you purchase property for $x - you then offer it For Sale (purchase price $x+20%) and offer finance to complete the deal - thus the mortgage you provide to the Buyer WRAPS around the Banks Mortgage to you.
Usually, this involves a Contract with a settlement date well into the future. The Buyer pays you, and you pay your Mortgagee for YOUR loan, and pocket the difference. When the time is right, the Buyer completes the purchase from you. (There's a lot more to it - but I am not a "full bottle" on it, so will defer to others...)
Flip - is where you find a good property, (e.g. selling at a good price) but choose to "on-sell" it to another Buyer and take a profit immediately.
There are many laws around these strategies that you would need to familiarise yourself with - so don't just jump into them without checking things out with the suitable people (e.g. solicitors, accountants, etc.)
As Sergeant Schultz would say "I know nothing" - so treat the above as a simple guide that is probably lacking in information....
Regards,