First download and activate Glossary View module.
Create a view
Show : Fields
Add a field : for example title
Sort : Alphabetical (ASCending)
Click Advanced
Add a contextual filter (title)
When the filter value is NOT in the URL
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This title will be Displayed on the edit page views instead of the default one. This might be Useful if you have the same item twice.
How many characters of the filter value to filter against. If set to 1, all fields starting with the first letter in the filter value would be matched.