An article on youth.lds.org lists these 9 ways that you can use technology to share your beliefs:

1. Find ideas, examples, and cool content to share on the #ShareGoodness website.
2. Share one of your favorite videos, a general conference talk, a song, or a scripture with a struggling friend or on social media.
3. Find an inspiring quote on Daily Messages to text, tweet, or share.
4. Participate in the ongoing Face to Face events and share videos and quotes from events. You can invite your nonmember friends to watch the Face to Face videos with you. Watch the previous LDS Face-to-Face events: David Archuleta, Lindsey Stirling, Elder and Sister Bednar, The Piano Guys, Elder Rasband, and Elder Holland.
5. As you do family history, use the FamilySearch Memories app to share photos and stories of your ancestors with your relatives on social media.
6. Watch, read, or listen to general conference talks each week and share your favorite quotes.
7. Like or follow the Church’s social media pages.
8. Watch inspiring videos and read stories about other Church members on the “I’m a Mormon” web page. If you are 14 or older, you can create your own profile and share it on social media.
9. Comment, share your testimony, or share an experience on any article or video on the LDS Youth website (youth.lds.org). Click Share your experience at the bottom of any page on that site.

Enjoy this video, “Sharing Your Beliefs:”

“Read the article “Nine Ways to Use Technology to Share Your Beliefs.”

For more ideas on how to share goodness online, read the book 101 Ways to Hasten the Work Online.