Here are a few practical ideas for you:
Prayer Card— write down the names of the people God lays on your heart and pray for their salvation. Ask God to give you opportunities and boldness to share with them.
Know your story— what was your life like before Jesus rescued you? What did God do for you when you made a decision to follow Him? Consider memorizing some scripture verses that God has laid on your heart so that you are able to share these readily.
Introduce them to God’s story— consider buying a Bible to give to someone with a personal encouragement from you in the front. You could also highlight a few verses of importance to you and use sticky notes to gently and easily lead them in their own journey.
Think conversation not presentation— you don’t have to have all the answers to their questions or prepare an elaborate presentation to share with them. Spend time listening to those around you asking God for an opportunity to hear something that can be used as a springboard. Remember, we are called only to be faithful witnesses, God does the heavy lifting in saving people!