Searching for "Mac Keyboard Shortcuts" in the Logos Help Center yields helpful results. I understand that this differs from the iPad keyboard used with an iPad, but I do not think Logos has keyboard shortcuts that are specific to the iPad. It is possible that some of the Mac shortcuts would also work for the iPad keyboard. At least I would give it a try.
There aren't many keyboard shortcuts available for the iPad keyboard. You can long-press the Command key on your iPad keyboard and see a list of available shortcuts. As Aaron mentioned, some of the keyboard shortcuts he posted for the Mac do work on the iPad keyboard.
Searching for "Mac Keyboard Shortcuts" in the Logos Help Center yields helpful results. I understand that this differs from the iPad keyboard used with an iPad, but I do not think Logos has keyboard shortcuts that are specific to the iPad. It is possible that some of the Mac shortcuts would also work for the iPad keyboard. At least I would give it a try.