This article below provides a clear understanding of the interface in Excel 2013, 2016.
When launching Excel, the working interface looks like the illustration:

1. Title Bar.

The iconic symbols in Excel house commands like Restore, Move, Size, Minimize, Maximize, Close.



The Customize Quick Access Toolbar hosts frequently used commands.

Following is the Excel file name, which is Book1.
Lastly, at the top-right corner of the header, you'll find Excel Help, Ribbon Layout, Minimize, Maximize, and the Close button for Excel workspace:

2. Ribbon Bar.
- It houses command tab groups, featuring a user-friendly interface for seamless spreadsheet operations:

- The Ribbon consists of command tabs like Home, Insert, Page Layout, Formulas, Data, Review, View, Developer.
- Each command tab contains command groups; for instance, the Home tab includes groups like Clipboard, Font, Alignment, Number, Styles, Cells, Editing.
- For detailed information on command groups, click the arrow icon -> commands within the group will be displayed:

3. Formula Bar.
- Contains the name of the data area, input region, formulas, etc.

4. Data Entry Area:
- Contains columns (column) and rows (row), where columns are ordered alphabetically, and rows are numbered. The intersection of a column and a row is called a cell. Data entry is done at the positions of these cells.

5. Sheet Tab.
- It is the area that holds the names of sheets created in the Excel file and includes a quick create button for a new sheet.
Additionally, Excel 2013 supports adding quick action buttons for spreadsheets:

- Switch the spreadsheet to default mode Normal, Page Layout, Page Break Review, Zoom Out, Zoom In as illustrated below:

Above is an overview of the Excel 2013, 2016 interface.
Wishing you all success!