If you want to try looking at trading pairs with high volatility in recent months, there are exotic pairs like EURTRY or USDTRY, its Turkish currency, this month the pair moves more than a thousand pips, but this is too risky because spread on this pair is so high.
Yeah right! Majors are everyone's favorite because they have the lowest spread and are the most liquid.
If one has a more short term trade horizon, it is good to look at the daily average true range of the pair divided by the spread- the more times the spread is covered intraday generally the more opportune it is to trade.
pair generally choose according to our knowledge and experience , i always like to trade with major pair which really secure 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.