Where to find basic information on choosing binoculars and spotting scopes
Below are several articles from very reliable sources to help you choose which binoculars or scope to buy.
Before buying binoculars
https://featheredgeoptics.org/buyers-guide/things-to-consider-before-buying-optics
Finding The Best Binoculars For Birding
https://www.allaboutbirds.org/news/finding-the-best-binoculars-for-birding/
6 Steps to Choosing a Pair of Binoculars You’ll Love
https://www.allaboutbirds.org/news/six-steps-to-choosing-a-pair-of-binoculars-youll-love/
Optics on a Budget
https://www.allaboutbirds.org/news/optics-on-a-budget/
Binoculars and Beyond: Nine Tips for Beginning Bird Watchers
https://www.allaboutbirds.org/news/binoculars-and-beyond-nine-tips-for-beginning-bird-watchers/
Binocular Mechanics
https://featheredgeoptics.org/buyers-guide/mechanics
Before buying scopes
https://featheredgeoptics.org/buyers-guide/thing-to-consider-before-buying-scopes
How to Choose a Spotting Scope
https://www.allaboutbirds.org/news/how-to-choose-a-spotting-scope/