Can't find "Get Resource," or install Rest Nodes/ Krest 1 or 2.

[Iris]

Please see here:

KREST nodes superseeded by new REST nodes

The KREST nodes are not maintained any more since the company that contributed the nodes went out of business last year. Therefore KNIME has rewritten the nodes from scratch and added lots of new functionality. The new REST nodes can be found in the "KNIME Labs" category on the standard update site.