Making connections is a core-fundamental on LinkedIn. Establishing meaningful connections and interactions is an important element in this particular process. But, to grow on LinkedIn you got to use your connections and also make connections with people whom you know, your friends, colleagues, your junior etc,. during the initial stages. 

I speak about how I am making sure that 90% of my connection requests are being accepted and they reply to my first text. Listen to "my Secret Recipe of Networking on LinkedIn"