I remember when I was coming closer to Yiddishkeit (i.e. following in accordance with the laws of Judaism and really becoming aware of what being Jewish is all about). I obtained a beautiful book written in English. “The Wisdom in the Hebrew Alphabet” by Michael Munk. It is all about the Hebrew letters. Based upon the Gemara Shabbat 104a, it discusses at length the wisdom behind the letters, their meaning, and the reasons behind their shapes. That Gemara in Shabbat is absolutely fascinating! It’s not supposed to be read at just face value!
Rabbi Meir said, “When I came to Rabbi Yishmael, he said to me, ‘My son, what work do you do?’ I said to him, ‘I am a Sofer (scribe).’ He said to me, ‘My son, be careful with your work, because your work is the work of Heaven. Maybe you will leave out a letter, or add an unnecessary additional letter. Consequently, you will destroy the entire world!'” (Gemara Eiruvin 13)