The Pipes, the Pipes!

For several weeks now our pipes have groaned in protest whenever flushing a toilet or turning on a tap. My research indicates that we may be suffering from the dreaded "noisy pipes" problem, and rather than call in an expert, I'm currently attempting that most foolhardy of tasks: attempting to fix the problem myself. A hasty Internet search suggests that I turn on every tap in the house, including the washing machine and outside spigot, and flush every toilet to clear air out of the pipes. Will this work? I have no idea, but it can't be helping my water bill...

Oh, early boy...the pipes, the pipes are honking...