Here are some useful links about X-ray crystallography.
a) How to grow good crystals:
1- https://www.nottingham.ac.uk/~pczajb2/growcrys.htm
4- Growing and Mounting Crystals Your Instrument Will Treasure
5- Growing Crystals That Will Make Your Crystallographer Happy
b) Editting a CIF file:
1- How to handle CIF file!
c) X-Ray Crystallography Software:
1- ORTEP
2- MERCURY
3- PLATON