It took about 2 years from contract to opening. 

If they insist on staying, then they abide by the contract, period.Tenants threaten to sue all the time.

And also I inherited the tenant and havent signed lease with them been advised to better honor the same terms of the seller until their contract finish.

Maybe your seller just wanted to put it under contract first.

Learn the lawsDon't use a contract "off the internet", laws vary by state and are also regulated on a federal level Learn the financing techniques correctlyDon’t skip parts of the processDon’t ever do a “kitchen table” closingUse the proper deedAn attorney can help you with the legal work, but the rest you are on your ownYour guru will not bail you out“Investing” in someone else’s deal by providing a small 2nd loan so the “investor” can pay for “cash to the seller” and for “closing costs” so he can do the deal is a very bad planKnow what problems can ariseLearn the responses and solutions to problems before they are needed Know everything there is to know about Title and what that meansKnow who a "protected class" individual isLearn the "back doors"Learn human natureUnderstand timelinesUnderstand regulation enforcement (some of these "mistakes" have a 10 year statue of limitations ( they can charge you 10 years AFTER you do the transaction) and carry hefty fines and possible imprisonmentThe court doesn't accept "I didn't know" for an answer"Know that the source of the lead plays a serious role in some states and federallyKnow how much of a "profit" pushes the boundaries to invite an investigationYou can be sued by the seller if you don’t do things correctlyYou are automatically at fault if an investigator or attorney or regulator gets involved.

This property went under contract at a great price passed all the inspections and appraisal and so forth.  

If a newbie doesn't know how to do basic due diligence on an investment, they also don't know how to do due diligence on a coach or how to evaluate a coaching contract to understand exactly what the student will receive for their money.

The property had a first mortgage, as well as a second mortgage, both from the same purchase money lender.After receiving the trustee’s deed and recording it, I discovered two “Independent Solar Energy Producer Contracts” recorded against the home.

The more issues you can take off their plate before you lock it up under contract the better you'll be.

Geez...I would notify the (female) tenant that she is in breach of contract.