How did you think of these riddles? I am awed!
Just solved the second one (but only that one). Indeed, a bad ear helps!
(just getting into the mood, don't mind me)
Congrats.

Any search engine could help you getting started on the next one!
Then, just follow the guide.
strictly focus on the key.
Space does not matter. Ignore it.
Stuff all that remain in the shaker, then enjoy your meal.
G'luck!