You'll need to extract the seeds from the cones. Let the cones dry out until they open and spill out the seeds. Count on this taking about two weeks. You may, but do not need to, treat the seeds in some way to help them to germinate, like scarification.

A spruce is a tree of the genus Picea /paɪˈsiːə/, a genus of about 35 species of coniferous evergreen trees in the family Pinaceae, found in the northern temperate and boreal (taiga) regions of the Earth. Picea is the sole genus in the subfamily Piceoideae.

Although Norway spruce seeds will germinate reliably well without pretreatment, they will sprout faster if cold stratified and primed in water before sowing. ... Any rotten or hollow seeds will float to the surface of the water, so sow only the seeds that sink to the bottom.

Stratification for pine and spruce is a fairly easy process. The seeds have mild internal dormancy. Soak the seeds in room temperature water for two days (change the water after 24 hours) place in moist sand in a clean plastic bag and store at 35-40° Fahrenheit. The bag should be loosely tied.. . . . .364011235866!]0000000000000009783314144982!]