Couchbase lite Sync Gateway

Hi guys, i am new and confuse on how to do Sync Gateway with couchbase lite.

I have tried to see links and videos but still unclear to me.

Could someone help me provide in steps the process i should take in order for me to use sync gateway?

The ‘Building your first app’ guides are probably the best place to start, for a step-by-step walkthrough, including setting up Sync Gateway: