The Child and Nature Network website has a Training section and a page called Tools & Resources- great for people who want to help kids get outside.
Salt Lake City Parks Department Trails & Natural Lands - shows you where trails are and also updates about fun events
Salt Lake City Urban Forestry - has a map of all the trees they manage! You can see the names of the trees in your neighborhood! https://www.slc.gov/parks/urban-forestry/
The Natural History Museum of Utah demonstrates ways you can participate in science and hosts events called Bioblitzes to document and catalog local nature. More info here: https://nhmu.utah.edu/citizen-science