I am new to bitcoin and my friend who uses bitcoins told me that it is better for new people to mine other coins what coins are best for new people and what coins are easiest to mine
Just stick to bitcoin for now. You cannot learn anything just by asking questions in a forum like bitcointalk. The first thing you should learn is that most of the people here are shills or fudders. And most of the coins are only good for trading once or twice and then move on to the other new coin. If longterm investing is what you're looking for, you cannot find one here.