the economic calendar can play a big role above all when news trading , generally i mostly use Fx Factory economic calendar that is really informative than others.
i always try to make sure major pair when time to trading , its good but on the other hand in demo account i use others currency , its really supportive to enhance trading performance.
before choosing a broker it is more appropriate to the concept of trading that will be used , if love doing scalping choose choose the broker which allows trading concept such as this.
some broker cheats with their clients , for that reasons before choosing a broker we the traders have to make sure FPA where all traders express their views about broker performance.