@ ashish_soni asked: "How do I bookmark particular section in TurboTax while filing"
I don't know if you are using Online TurboTax or desktop software, so I'll assume you are using Online TurboTax.
In Online TurboTax they are called "flags."
To flag a page you must be on the page you want to flag, and while there go to the left menu column and choose the TAX TOOLS tab, then the subtab TOOLS. On the Tools windows is a blue Flags button. Click that Flags button to mark the page, and a popup will appear where you can also make a note there, if desired. To review your flags to get back to that page later, you follow the same procedure: TAX TOOLS>TOOLS>Flags, then click the Flag that you want to return to.