I can answer those :)
1) Each tutorial only appears once! Once it's been fully seen it doesn't appear again. Putting in an option to either toggle tutorials off right off the bat or be able to see them again is on my to-do list.
2) The icon up there is Auto! The claw with puppet strings toggles Auto on and off, which auto-advances the text without you having to manually advance. When manually advancing, it gets turned off.