Dumb question

[rookiepip]

Hi All,

My name is Sam and I am new to this website. This is a great website and many thanks to those who offer it for free. I am very new to any kind of trading and am going through the pipsology school - 3rd grade. Here it mentions:
---------------
A Swing High is a candlestick with at least two lower highs on both the left and right of itself.
A Swing Low is a candlestick with at least two higher lows on both the left and right of itself.
-----------------
My question is, what is two lower highs or two higher lows and how do I spot it?

Thanks,
--Sam