The following sources contain a wealth of Jupyter Notebook shortcuts, as well as some tips and tricks:

• Max Melnick - Jupyter Python Notebook Keyboard Shortcuts and Text Snippets for Beginners
• Dataquest.io - 28 Jupyter Notebook tips, tricks, and shortcuts

Favourites

Taken from Max Melnick’s site, some of my most frequently used shortcuts are listed below:

• shift + enter run cell, select below
• ctrl + enter run cell
• option + enter run cell, insert below
• A insert cell above
• B insert cell below
• C copy cell
• V paste cell
• D , D delete selected cell
• shift + M merge selected cells, or current cell with cell below if only one cell selected
• I , I interrupt kernel
• 0 , 0 restart kernel (with dialog)