Butterflies of Alaska - a Field Guide (free download. Consider a donation to the Ken Philip Fund to support Alaskan Entomological Research at the UA Museum of the North. In the gift designation or comments box, write “Kenelm W. Philip Entomology Fund.” )
Alaska Entomological Society
The Alaska Entomological Society also has a links page with many excellent and recommended resources.
Alaska Science Forum - articles on Alaskan animals with a number of good articles on insects.
USDA - ARS manual to Collecting and Preserving Insects and Mites - another recommended guide to insect collecting.
Beneficial Insects and Spiders of Alaska - a PDF of a short and nice overview made by UAF's Cooperative Extension.
The Ken Philip Lepidoptera collection - a website showcasing all the pinned specimens in the Ken Philip collection as the collection was in 2014-2016 after Ken's passing and before the Smithsonian transferred the majority of the pinned specimens to the US National Museum of Natural History.
A great video by Wayne Maddison and Heather Proctor on How to Collect Jumping spiders (which is also generally useful for many spiders and beetles).
Videos made by Barney Booysen of me (Derek Sikes) explaining various field collection methods:
Filter cloth method to empty traps
Blue vane bumblebee traps
Using a sweep net and aspirator
Setting pitfall traps