My very first job was as a barista serving espresso coffee drinks. 
that sounds like a great job to have, I myself have been interested in becoming one, Any tips I should know? 
Yes just know the different type of behind the counter drinks to serve that is popular like hot drinks,cold alcoholic and non-alcoholic beverages.
Indeed I'll have to learn the ropes and I'll get the hang of it, What is a baristas salary? do they make a lot? 
No it's not no 7 figure job it's a typical bartender like job about minimum wage but tips is how we made our money you may make more working at Starbucks coffee company honestly but it still was very fun.