The following Bonsai article links are from the Minnesota Bonsai Network and were written by Greg Cloyd. There a total of 13 well written/detail orientated articles covering various Pinus trees.
Pine Management Theory – Part 1
Pine Management Theory – Part 2
Pine Management Theory – Part 3
Pine Management Theory – Part 4
Pine Management Theory – Part 5
Pine Management Theory – Part 6
Pine Management Theory – Part 7 Updated 01-17-2020
Pine Management Theory – Part 8
Pine Management Theory – Part 9
Pine Management Theory – Part 10
Pine Management Theory – Part 11