G-mail had more keyboard shortcuts that’s difficult to remember.Now get a GBoard that has all the shortcuts used in Gmail as in keyboard
Gboard is an additional hardware with a price of $19.99. It has 19 keys for 19 Gmail shortcuts.
Google has created an helping guide for this gboard
If you want attractive coloured stickers then you can post to Google for sending Gmail stickers. you can request at the Gmail’s blog
Complete User guide can be available here