Implementing ARCS for first time. Need Help/Advice

Summary: We are wanting to implement ARCS for the first time.

Curious if other clients have all used Implementation Partners to complete this or were able to implement by themselves?

If we do this on our own, is there anything that would be helpful to know as others 'lessons learned'? Or where to start? We completed the Oracle University Training, however I feel like those videos always just scratch the surface and don't get into true hit the ground running.