Finding you birth number is very simple take your birth date and add them together.
(exp) jan, 5 1979
Now seperate 32 and add them together 3+2=5
The birth number for this date is 5
Finding your magical name is just as simple. Lets take my name as an example and my birth numer 5. The name you choose should corilate with your birth number.
1 2 3 4 5 6 7 8 9
A B C D E F G H I
J K L M N O P Q R
S T U V W X W Z
Now suppose you like the name Draco. Using the above chart break down the letters and add them together.
D=4, R=9, A=1, C=3, O=6
Take the number 23 and seperate them and add them together
My magical name matches my birth number.
Sometimes this takes months to find the right name for yourself but once you do start using it in all your spell castings.
High Priest Draco