   Hex Numbers...  O_o
  Hex numbers go 0 1 2 3 4 5 6 7 8 9 A B C D E F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F But after 9, what numerical values do the letters have? Is it going 10, 11, 12, 13, 14, 15, 10, 11, etc?   
  Yes, 0x0A (base 16) equals 10 (base 10);  Hex -> Decimal system conversion table:A   -> 10B   -> 11C   -> 12D   -> 13E   -> 14F   -> 15But 10 in hexadecimal means (1 * 16 + 0)=16 in decimal system thus SIXTEEN.The same for 11 in hexadecimal that is (1 * 16 + 1)=16 in decimal system thus SEVENTEEN.In hexadecimal (and also in binary or octal systems) you should read each digt/letter by itself starting from left.To convert hexadecimal values to decimal numbers you just have to sum all digits/letter multiplied each for a 16 factor (2 in binary, 8 in octal) power by position (0 is power of most right digit/letter, 1 is power of the second most right digit/letter and so on).   ;  Thx alot. :D   