Rookie here with basic help needed

I am switching over to your app from SimpleInvoices. Your app is fantastic but I found that some of the help content is outdated.

  1. I downloaded the recent version and am having problem removing the Recent Quotes, Projects and Task boxes from the dashboard view. I am only using the app for invoices.

  2. I see in the /assets directory that there are three themes. Core, InvoicePlane, InvoicePlan_blue.
    How do I change the theme?

  3. How do i remove the Quote Overview box?

Your help is truly appreciated.

Themes can be changed in the general settings, the overview cannot be changed without modifiying core files which is not recommended.