Yizkor is observed in three ways:

1) Light a Yahrtzeit (24 hour) candle
Friday evening, May 29 from a pre-existing flame in memory of your relatives who have passed away.

2) Give charity in memory of the person(s). 
This can be done before the holiday at www.JewishParadiseValley.com/donate

3) Recite Yizkor on May 20
Download the Yizkor Booklet prior to the holiday by clicking here.