Rather than having to edit your BibTeX bibliographic entries manually, you can manage your references with a reference management program, such as Mendeley, and then export references in BibTeX format.
Mendeley reference manager brings the best functions of Endnote and Zotero and perhaps is the easiest reference management system to combine with LaTeX. If you follow these steps, after a few setting changes (and no extra downloading), you will be able to have an automatically syncing BibTeX file for your LaTeX document.
Now any references you add to your linked folder in Mendeley will automatically be added to the BibTeX file in the LaTeX folder
In terms of citation keys, Mendeley automatically generates in the format of [AuthorYear].