Use the same techniques to terminate wires to receptacles as you did for switches: Strip off the insulation, make a hook or slide into a clamp, and tighten. The terminations will be different, though.
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Understanding Electrical Wire Color Codes

First on the electrical wire color code is black. “Black wires are most used as ‘hot’ wires in residential systems,” says ...
The multi-wire branch is here to stay; so is ground fault protection. But we should unite these technologies only when it’s a good match. Ground-fault protection and the multi-wire branch circuit ...