carpet installation?

hey i recently bought a really good condition carpet to replace my torn down dirty one. Now i was curious how to go about the process. I took out the old carpet but im not sure how to put the new one in. Im not sure what adhesive to use or if there is something else to especially for carpets. Any advice would help.

The carpet should lay back into place W/OUT glue. I have used some 3m spray adhesive on some spots… the only place you will have to work it is by the center console.