Healthy or not trees

I recently purchased a home on 3 acres with 2.5 forested and want to learn best practices. I have maple a few white pine a few hickory and lots of white ash. Should I cut the white ash trees down now to give other trees more canopy rather than wait for the beetle,? Where can I read more or find someone to look at my forest and help me make a management plan to optimize the health of the trees?