Full Playlist: Floor Plans (Exercises Step by Step)
https://youtube.com/playlist?list=PLe_I-JWckL7HV2kj3UIWPfPZOAhIQl9nD
Project Architecture - Exercise 1 - Ground floor. 
Download PDF file:
Link to PDF file: https://drive.google.com/file/d/1QcJdPJdVrt27nDh9OieIe3KAJoksYKeH/view?usp=sharing
This is an exercise of drawing a floor plan. 
It's part of a series of exercises for beginners (Project Architecture).
Recommended for beginners.
Contents:
Intro:
    1:18 Set up Units
    2:33 Create layers, set orthomode and OSNAP
Draw walls
    04:06 Exterior walls
         05:18 command offset
    05:56 Internal walls
        08:18 Selection cycling
        10:08 Trim sections of lines 
        10:42 Delete duplicate objects
        11:17 Linetypes (draw dashed lines)
        12:54 Lock a layer
Staircase
    14:08 Draw the staircase
    16:10 Draw an arc
    16:53 command Path Array
Windows and Doors
    19:31 Draw a window
    23:22 Dynamic blocks
    25:51 Add windows to the plan
    30:04 Draw a door
    32:09 Convert doors to a block
    36:32 Add text (room labels)
    38:52 Calculate an area
Organize Layout and Print
    39:47 Draw arrow in staircase
    40:19 Organize the Layout tabs
    44:43 Title Block
    49:03 Dimension lines
    52:58 Viewport Colors
Licence:
The video shows the version 2020 of AutoCADĀ® and it is used exclusively for educational purposes.
Autodesk screen shots reprinted courtesy of Autodesk, Inc.
The narration and all the illustrations were created by CAD in Black.