Hi @donnlee,
You can vote for witnesses here - https://steemit.com/~witnesses.
I'm not aware of any on-going campaigns, but occasionally, witnesses will create posts asking for votes and describing their current projects. The best place I know of to look information about witnesses is here - https://steemit.com/created/witnesses. I think they have a channel in steemit chat too, but I don't use that much, so I'm not sure how useful it is.
@remlaps Thank you. I just found this and it has some more info on witnesses: https://steemit.com/steemit/@thecryptofiend/the-missing-faq-a-beginners-guide-to-using-steemit
Much to learn!
That's a good article. It had slipped my mind, so I'm glad you found it. There is a lot to learn, but fortunately you can learn it in small chunks. Just be attentive to quality and relevance on the things you post, post regularly, and vote & comment on posts from others, and you'll do fine. You can learn the rest when you need it. Seems to me like you're off to a great start.
Welcome to the platform!