When?

Set goals. These are people you will share with. Each week, write specific names and times you might do that.

Pray for your social network. Make sure you are spending time in prayer.

Go try to share the Gospel with the people on that list.

If you know believers, try to recruit them to do this. Give them 411 training. Write those names down. Set up times to talk to them.

Make sure you're living in obedience. Build on that over time.

Even simpler answer to when: any time, anywhere. Today, we're going out and sharing door to door.

This is not a one day thing. This is just being obedient. We're lining ourselves up opportunities for God to work.