You will want to get the tenant on a new lease agreement when you have substantial updates to the lease agreement or a new lease altogether.

Start with learning how to run comps, how to estimate repairs, how to find deals, how to negotiate with sellers, reading and understanding a purchase agreement, finding an investor friendly title company, having an attorney create an assignment agreement for you, contacting investors to put on your buyers list etc.

Start with the California Association of Realtors Residential Lease Agreement.

Hello BP,I have a potential 2 Flat in Berwyn that I have a "verbal agreement" to purchase for 205k.

The Taylor Law Firm, Harrison Law Firm, and Gene Davis Law are a few who I have used.As mentioned by David Ramirez, I would recommend partnering up with someone or identifying and working with a number of cash buyers prior to signing the purchase agreement.

. ;-) If she isn't in possession and you haven't signed the agreement, and you refund based on a provable fact, she can't do a thing.

How can I structure an agreement where an investor finances the conversion and we share the Airbnb income?

Hello folks in Georgia / Atlanta,The Bigger Pockets Book On Rental Property Investing provides access to a comprehensive list of 34 forms that would be useful to a landlord including things like a lease agreement, application, late rent notice, move-in-move-out agreement, estoppel agreement, tenant phone questionnaire, pet addendum, etc. etc. etc.  

@Daniel Mendez As much as possible.If we do a holding agreement to take the unit off the market we try to get them to pay the first month rent and any other move in costs other than the security deposit, which they pay at lease signing. 

When your tenant renews their lease and the rent increases, the handling of the last month's rent can vary depending on the terms of your lease agreement and local laws.