Executive orders:

US: https://www.federalregister.gov/presidential-documents/executive-orders/joe-biden/2021

TN: https://sos.tn.gov/products/division-publications/executive-orders-governor-bill-lee

Legislation:

US Code (for reference in legislation): https://uscode.house.gov/
US Congress: https://www.congress.gov/
To track US Congress bills: https://www.congress.gov/account/register and then set an alert on the bills you want to track

TN Code (for reference in legislation): http://www.lexisnexis.com/hottopics/tncode
TN Legislature: http://www.capitol.tn.gov/ and http://www.capitol.tn.gov/legislation/
To track TN Legislature bills: https://wapp.capitol.tn.gov/apps/mybills/CreateAccount.aspx and then search for bills https://wapp.capitol.tn.gov/apps/mybills/MyBills/Search.aspx to add them to your list