To disable the Featured Products on home page, please follow the below steps:
- Login your contrl panel.
- Access to Setup & Tools --> Store Settings
- Go to Display tab --> Display settings --> Put the Featured Product is "0"
Please see the below image!

To disable the newsletter popup, please remove this code: %%Panel.NewsletterPopup%% at SideNewsletterBox.html file.

To search HeaderFreeShippingText.html file, please follow these steps:
In the backend, select menu Design > Themes > select EditHTML/CSS icon
Then, in Toggle Editor Window, select Ctrl + F (Or Command + F) in keyboard, put "HeaderFreeShippingText.html" into the search box to search HeaderFreeShippingText.html file
Please config it in the control panel.

Please config it in the control panel.

Please config it in the control panel.

To disable the Product Review tab, please follow the below steps:
- Login your contrl panel.
- Access to Setup & Tools --> Comments
- Go to Built-in tab --> Uncheck "Enable For: Product Reviews"
Please see the below image!

Please replace "%%Panel.customTabs_note%%" to "%%Panel.ProductOtherDetails%%" at Panels/ProductDetails.htmlstrong> file.