[R] suggest some books or materials for matrices basics , its partitions, iterations, clusturing

[booop booop]

Dear sir,
Could anybody kindly suggest me some good
e-books(which are available in the internet),or other
materials in the web....
sites to refer examples ...
in the following area

matrices & its basics....
partitioning of matrices...
iterations of matrices....
Clusturing in matrices...

thank you sir..

with kind regards,
boopathy.