The I-Ching or "Book of Changes" is the original text describing the 64 hexagrams. Depending on the translation and whether or not you buy it secondhand, the book will cost you anywhere from $2 to $40 (I have a second-hand translation that only cost me $2, and a hefty literal translation of the original text that cost me $36). There are also a number of websites that will describe not only the meanings of the hexagrams but the manner in which you divine them. Do a Google search for the 64 hexagrams of the I-Ching and you will find pages of results.
the number of colour combinations when you start is 64, I think
64
64
64
26 = 64
64
1
64
26 = 64 combinations, including the null combination - which contains no numbers.
7
4 x 4 x 4 = 64 :)
Total 64 combinations will occure in input.