With a diverse group of members, members will have a lot of different learning styles. Some people may find it easier to begin with theory and tutorials rather than jumping straight into a project, which is what this page is for.
A lot of beginner mistakes happen simply because you don’t know that something should be considered. I would highly recommend spending time reading resources as you find yourself using components in your designs. For ex: Where should a decoupling capacitor be placed? What is a decoupling capacitor? Why is it used? etc. putting those in google, and reading the relevant links will give you so much more knowledge and able to make better designs.
Microelectronic Circuits by Sedra/Smith 7th edition
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It might be worth looking at some of the practical applications that are discussed in the book in addition to understanding the basics of how certain parts work. No one here is going to interrogate you on circuit theory so there is no need to dive too deep.
Learnabout Electronics
https://learnabout-electronics.org/index.php
Electronics Tutorials
https://www.electronics-tutorials.ws/
All About Circuits
https://www.allaboutcircuits.com/education/
Altium Blogs: https://resources.altium.com/
Altium Podcasts: https://resources.altium.com/podcast
Signal Integrity Journal: https://www.signalintegrityjournal.com/
Texas Instruments (or any manufacturer’s application notes) - tons of info
Dave Jones' EEVBLOB Videos: https://www.youtube.com/user/EEVblog, and the electronics tutorials: https://www.youtube.com/watch?v=0UksWKuVFFo&list=PL3C5D963B695411B6