The way that you would put a crib together, depends on the crib that you purchased. Some screw together and some just slide and click together.
1 Additional Answer
Cribs come with instructions which can be easily lost. Luckily, cribs are fairly simple to assemble. The sides will need to connect via screws, or snaps. Don't forget to put on the bottom before using the crib. You can find out more information here: www.ehow.com