Hindus do not worship idols; they worship God, Ishwara, in lots of varieties, together with types of stone or steel. Consecrated deities in temples are used to hope to God such as you use a cellphone to speak to a distant good friend. The sixteen steps of puja carried out in temples is defined on this video.
Swami Tadatmananda is a traditionally-trained trainer of Advaita Vedanta, meditation, and Sanskrit. For extra info, please see: https://www.arshabodha.org/