API - Help with getting started

I am attempting to use Curl or powershell to use the API.

The API pull i am attempting to use is...

curl 'https://api.jive.com/users/v1/lines' -H 'Authorization: Bearer {ACCESS_TOKEN}'

and 

curl 'https://api.jive.com/users/v1/users/6586528897936948237/lines' \ -H 'Authorization: Bearer {ACCESS_TOKEN}'

But i am not getting to point where i have a valid access_token.