Radio programming software
Web site providing information on many topics for the amatuers radio and experimenters.
A YouTube channel by Tom WA2IVD about Ham Radio topics. A good source for ICOM How To videos.
A podcast for experimenters. Lots of links to articles and vendors.
Larry's List: Groups.io - FYI
Larry's List: Groups.io - Hamfest
Free RF design calculators
A 4 part SDR QEX article by Gerald Youngblood K5SDR, Flex Radio Founder, President and CEO.
A good article by Kylar Mack on soldering with lists of links about related subjects.
3D printer projects for Ham Radio
Find a local Ham Radio License testing session