I also would like to have some suggestions. Is there any good free e-book to brush up the basics?

https://www.analog.com/en/resources/technical-books/linear-circuit-design-handbook.html
https://web.mit.edu/6.101/www/reference/op_amps_everyone.pdf

 

Some will say Grobb, Malvino, or Floyd. My preference is Boylestad's Introductory Circuit Analysis. Older editions but still the same theory is cheaper. Preferably in Very Good condition (like new). Might be found online as a free PDF. There is also a lab manual to accompany it. Excellent grounding in DC and AC theory. Also, his Electronic Devices and Circuit Theory and its lab manual for solid state components as a follow on. GetTextbooks.com is a valuable resource when searching for used books of any kind.
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The listing shown is a nasty example of the price gouging there is with required textbooks. I saw this a lot during my college career, so I routinely borrowed books long enough to copy the assignment material. That cut my total cost almost in half.
NO, I did not have the fun times that many others had, but I did learn what I needed to learn. And the prior textbooks, available dirt cheap, are the perfect reference books for later on.
AND THANKS to Melanie M. for the loan of that horribly expensive business law book!! Which I did return to her !!

 

I'm actually starting the process of winnowing out my textbook collection. I need the room and I don't want to saddle my daughter with that burden (she'll have enough of my junk to deal with).

I did an inventory count and I started with just over 1300 textbooks (though I know there's still some hiding in a couple of boxes I can't get to right now). I've already donated over a hundred to Goodwill (ones that they will probably end up recycling, but hopefully they can sell a few of them). Those are mostly ones that are focused on specific applications, like VBA for Excel 2007 or FoxPro.

Most of the books fall into one of four categories:
(1) Textbooks for courses I took.
(2) Textbooks for courses I taught (or evaluated for courses I taught).
(3) Textbooks for topics that I delved into at some point in my career (or, in several cases, that I wanted to delve into and ended up going a different direction).
(4) Textbooks that were given away by professors when they retired.

Many of them are in pristine condition -- quite a few of them have actually never been opened, something which I hate to admit.

Interestingly, the ones that have, by far, been the most referenced are the ones for the courses I took. Those are my go-to books, probably because, even decades after I took the course, I am immediately familiar with the layout of the text and can quickly find what I'm looking for, even if it's not the best text on the subject. Thus I am extremely satisfied with my decision early on to never sell back my text books. I sold one book for a humanities course my freshman year and quickly regretted it -- it was a collection of essays and stories that I have wanted to refer back to on numerous occasions but I don't recall enough information about most of them to be able to do so.

Anywho. My point is that I have a lot of texts that are looking for a new home. My goal is to get down to under 300. I'm willing to give some of them away for the cost of shipping; others I think I can sell online, but would be willing to give a significant discount to someone from here. I'm currently working on cataloging them.

 

The texts for those courses I did not get to take were the advanced chemistry (organic), which others explained to me was a killer-hard course as taught where I went. So I bought an older text and discovered that it was even more challenging than the dynamics/kinematic course that i did well in.. Dynamics as we got the class was seriously difficult. But the benefit was that none of my mechanical designs ever crashed.

 

I had a few topics, such as thermodynamics and dynamics, where I took both the Physics and the Engineering versions of them. Talk about never the twain shall meet! Completely different courses with almost no overlap. I was very glad that I took both. Not only did the combination give me a much better understanding of the material from each, but it also drove home just how different people in different fields approach the same topic.

 

Thank you for all your help. Now I have a lot to choose


WBahn
I really star understanding simple circuits like using transistors as switches, timers, and other basic things. I love physics, but for some proyects I need simple circuits that I always copy from the internet or buy already done. Like the one here https://forum.allaboutcircuits.com/threads/circuit-or-arduino.206775/#post-1985772

maybe at the end of summer, or the year, or maybe my life, I will be able to do thinks like that. I´m not in a hurry, is just a hobby.

Also, thank you for your offer of books, but I live in Spain and shipping will be expensive

 

Hello,

This booklet is a nice reference:
https://archive.org/details/analog_engineers_pocket_reference

An other well known series is from neets:
https://archive.org/details/neetsmodules_202003/NEETS MOD 1 NAVEDTRA 14173A/mode/1up

Bertus