Christianity
And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever;
Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him:
but ye know him; for he dwelleth with you, and shall be in you.
John 14:16-17
Read the Bible
The Bible Gateway website is a collection of daily readings, numerous Bible translations, an audio Bible, study tools and much more.
A great resource for studying the Bible.
Books
These three kindle books are under $3.00 on Amazon and provide a lot of basic information.
Color Coded Tablet to Pope Pius IX
The Tablet to Pope Pius IX was revealed by Bahá'u'lláh around the same time as that to Napoleon III. In it Bahá'u'lláh addresses the Pope with the authority and majesty of God, proclaiming to him in unequivocal language the promised return of Christ in the glory of the Father, and summoning him with the commanding voice of the Almighty to leave his palaces and hasten to present himself before the throne of his Lord. Identifies Himself as the Lord of Lords.
Color Coded Tablet to the Christians
"This is the Most Holy Tablet sent down from the holy kingdom unto the one who hath set his face towards the Object of the adoration of the world, He Who hath come from the heaven of eternity, invested with transcendent glory In the name of the Lord, the Lord of great glory."