re : worship of shivlingam.

[dromkarasreekrishna]

dear all, namaskarams. which shivlingam is the best to worship-parad; narmadeshwar; gold; silver; sphatika etc at home in our pooja room. what if we are not able to follow detailed rituals. how to worship.kindly clarify.
regards.
dr.omkarasreekrishna