Always welcome.
Regarding delegation by IOG or CF, have a look here:
Make sure to follow both on Twitter to not miss on new rounds and deadlines.
Regarding what you have to do on the node, this depends a lot on how your setup looks like so it is hard to say, but in principle running the nodes is not very time consuming when everything is up and running. KES keys have to replaced every 3 months and it just takes a few minutes, there are updates from time to time (make sure to follow input-output-hk on Github to get updates, version 1.31.0 was released yesterday for example: GitHub - input-output-hk/cardano-node: The core component that is used to participate in a Cardano decentralised blockchain.)
EDIT: Oh yes, and what I forgot, you might want to join one or several of the SPO alliances: F2LB, xSPO, MDP, bare metal,…