"This is Tom."
If youtr on mobile go to the settings on he keyboard. (Or hold down the emoji button from the samsung keyboard itself. A menu should pop up. Press the cog) then add languages. This makes it so yiu can easily swith between them by holding and flicking he space bar to the left of right.
I have a file with complete instructions on how to set up the Windows 10 Russian Mnemonic, along with a guide to typing Russian letters, including two-key combinations in order to get letters like Ё, Ю, Ч, plus switching between two Languages (English & Russian). I can't figure out how to post the file, though.