A Designer must know that Adobe Illustrator is very important for creating vector-based drawing. There are many shortcuts that can save our time and help our work smarter and faster.
some keys are discussed in my previous posts and remaining are in this post
Undo Ctrl + Z
Redo Shift + Ctrl + Z
Grouping Ctrl + G
Ungroup Shift + Ctrl + G
Copy Ctrl + C
Paste Ctrl + V
Select all Ctrl + A
Lock Ctrl + 2
Unlock Alt + Ctrl + 2
Duplicate object Shift+ Click + Drag
Zoom in Ctrl +
Zoom out Ctrl –
Save/Save as Ctrl + S
Clipping Mask Ctrl + 7
Create Outlines Shift + Ctrl + O