Read or listen to the Bible, or both. Read it slowly, read it in large chunks. If it is God’s word written, it should begin to make an impact on our lives. And get into a church which either reads all of the Bible over time (through a lectionary), or preaches/teaches the Bible well (like the church we’ve been taking our grandkids to), preferably both.
Start children slowly, but wisely through the word, through the story and message of scripture. I think Our Daily Bread for Kids (and here) is a good place to start. Of course with the littlest ones, we’ll need materials or practices appropriate for them. Our Daily Bread for Kids Sunday School Songs (and here, scroll down) starts getting them to listen and eventually sing, which is good, even for the youngest age, I think.
The point is, we need to be in the word, day and night. And that word leads us to the Word, Jesus, the fulfillment of everything, bringing all things to their ultimate goal in God’s grace and kingdom come in him.
Why? Not for any other reason, other than the end itself. This is not a means to be a better American, a better world citizen, a better whatever, even though those things might be good in their proper place. No, it’s about being a true Christian, a follower of Christ, whatever the result of that may be.
Begin small, and keep at it. Bible Gateway is a good place to start to look for a Bible translation which might fit you. My preferred translation is the New International Version (NIV) which I think achieves an excellent balance between up to date scholarship, accuracy and readability. My second preference might be the New Revised Standard Version (NRSV) , but there’s many other good Bible translations to choose from (again, see Bible Gateway).
I can’t end better than from the psalmist, but with the additional thought from scripture that this light is not just for ourselves, but for the world, in and through Jesus.
Your word is a lamp for my feet,
a light on my path.