General keyboard shortcuts for iOS?

Hi everyone,
I'm relatively new to this community, and have been searching for topics like this. Please forgive me if I am duplicating something that has already been discussed.
I'm quite comfortable using VoiceOver gestures on my new iPad, and have been enjoying using a hardware Bluetooth keyboard since I like to be able to type fast, with all of my fingers I have used a Windows computer for most of my life, and have used many, many common keyboard shortcuts that perform common operations, such as Ctrl+X to cut, or Ctrl+v for paste. As long as I have a hardware keyboard for the iPad, I was wondering if there is a list someplace of common keyboard shortcuts for iOS apps, such as for formatting text that I select in Pages, or for replying to Emails? Also, is there a guide, or easy explanation of QuickNav, what it is, and what it does? Thanks!

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Thanks!

Thank you, this is exactly what I was looking for! I'll keep that for my reference!

more about keyboard shortcuts

Hi, I have an apple bluetooth keyboard. I looked at the list of shortcuts in the link that was posted here, but the reference to voiceover is minimal. I don't know how to do simple things like double tap or double tap and hold. (enter doesn't work.) Can anyone help with basic navigation shortcuts? Another problem which is more serious, whenever I type each character is inserted twice. I do of course hit the key just once, but the letters are written twice. Any ideas how to solve this problem? Thanks!