The scripture refers to signs that follow when you are saved, not what you do to get saved.
For anyone who has questions, get a concordance, look up every reference to tongues in the Bible, and start to study them out. Ask the Holy Ghost to guide you, ask God for wisdom and understanding, and let Him show you what He has said. Other people may be right or they may be wrong - you are responsible to study and find out. There is absolutely nothing wrong with asking for advice, for guidance, etc. but you will have to know how to rightly divide the word of truth, and you do this by becoming familiar with what the word says about it - whatever the subject.
Be blessed in your studies, and may He enlighten the eyes of your understanding to know the hope of His calling & the riches of the glory of His inheritance in the saints.