Tax implications of selling a rental property

[Mike Finn]

Hey everyone, new to BP and have lots of questions. Sorry if this question is too broad or basic.

I am trying to understand a basic tax scenario. Let’s say you sell a rental property for a 100k profit (just to make it easy). What would the tax impact be? How does one minimize that tax impact? How long do you have to reinvest that profit into the down payment of another property, or multiple properties?

I have heard people mention that you have anywhere from 90 days to two years to reinvest that profit and avoid a capital gains tax. 

Can anyone out there help me better understand this?