[sd-tagging-helper] How to start and how to add tags for dummies

The following content is extremely important for greenhands and dummies like me. I sincerely hope that the following content can be add to the newest version of Readme.
original tool sd-tagging-helper
my issue How to start and how to add tags for dummies #25

How to start

Firstly, Pillow and PyQt5 required

pip install pillow pyqt5==5.15.7
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Secondly, start the GUI

python helper.py
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How to add tags

what are these tag columns?

Search..
All the tags should be added to the tag pool before added to the image.
Search the tag you would like to add here to check if it is already in the tag pool.
If you cannot find your tag in the tag pool, you can add new tags here.
Suggestions
The tags you used will be here
Favourites
Move your mouse to the tag, you will see a star on the left to the tag. click it to light the star and then the tag is in the favourites column
Active Tags
The tags that is going to be the added to the image.

How to add a brand new type of tag

Type your new type of tag to the Search... bar, then click the +.

how to add and delete a tag for the img

Double click(or select tag and press enter) any tag in the column of Search.., Suggestions, Favourites, then the tag will be in Active Tags column. To delete tags, you need to select tag in Active Tags column and press enter(or delete)