I am strong advocate for having a deep knowledge and understanding of the mysteries of the Hebrew language, and, in particular, its alphabet. Given this, I will be offering some insights into the mysteries of each letter over a multitude of posts to come, starting with Aleph. They will not include all the mysteries, for that would, if possible (which it is not, for each new Qabalist will bring a new understanding to it), require at least a full-sized book. It will, however, get you thinking.
For now, you can check page 52 of Regardie's The Golden Dawn (sixth edition) for the table of the Hebrew alphabet, with its gematria, letter meanings, letter finals, etc. If you don't have that book, scroll down halfway on the following page from the OSOGD for it: