Don't used that as a guide. Use your self analysis  instead and spend time learning others "factors" that needed to be considered as a reference to your future trades.

It will be a long discussion so I will just choose a simple guide you can take. After choosing your preferred coins to trade (aside from bitcoin), always make sure that you are keeping up to the latest trend on that coin. How to know that? Lots of options like hearing other speculation on their ANN thread, taking notes of daily high and low price etc. You know you don't need to understand those as once you are continously trading that coin, you will automatically known what things should be done. Just focus and be eager that you really want to learn.

Also some of the altcoins only have a direct pair to BTC that's why when bitcoin price is moving, the USD value of those coins are moving too e.g up or down.