Sir,
Try to learn the basic pooja. One book brought our by the Sringeri Ashramam titled "Sree Siva Panchaayatana Poojaa Paddhati" will be useful. If you do daily pooja then it is not necessary to give it to temple.
Naivedyam of cooked raw rice in proportion to the size of the vigraham has to be offered daily without fail; simple flower and Arathi will not suffice. For all normal sized sphatika lingams (up to 4 or 5 inches height) usually half a cup of raw rice taken and cooked will be sufficient, I feel. But you will better consult some well-informed sastrigal in this matter.