The only way to bring them into usage is to read a lot. This will help you see them frequently and add the commonly used ones to your active vocabulary. These website will help you too ! Go through them :) http://www.talkenglish.com/Speaking/listIdioms.aspx http://idioms.thefreedictionary.com/

There are ten basic errors in your question. I don't mean to sound harsh, but you must never make mistakes with idioms or slang. Your first priority should be to get the standard English right, otherwise any attempt to use slang (note that ''slang'' is never plural) or idioms will be a guaranteed mess. Walking before running, remember. ;)