The basic knowledge of Lightsworn is to Swarm the field, and maintain control over it.. i used to play this alot. I'll give you my decklist:
3|Celestia, Lightsworn Angel
3|Wulf, Lightsworn Beast
3|Lumina, Lightsworn Summoner
3|Honest
2|Garoth, Lightsworn Warrior
2|Lyla, Lightsworn Sorceress...