Actually, I think the Blue Bell is the most complex >.< Here's a good explanation:
http://fogu.com/hm/animal_parade/the_blue_bell.php
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The yellow bell is on the beach south of your farm its off the road to Flute Fields It is called the rusty bell for now but it is the yellow bell. Take it to the harvest goddess to find out what to do next.
it is the key you need to unlock the entrance to the watery cave so you can find the blue bell (ben's bell) you get it from paolo
yes because if you wont you will never find out it.thanks for reading
That depends on who you want to marry. Some people don't move to the Island until you ring a certain Bell. If you want to marry the Harvest Goddess or Harvest King you will need to ring all the Bells. It might be the same for the Wizard and Witch but I am not sure.
To find Phoebe, you have to chime the Red Bell to go to the Garmon Upper Mine. She is on the fifth floor of the Upper Mines.