I have spent thousands of dollars on technical books in my career. Especially in the early days of my career. Also technical books are expensive :>
These days I hardly buy any technical books at all….reasons like the content are not up-to-date enough and printed books are not readily available. I cannot possibly carry so many thick and heavy books between workplace & home everyday 
I bought many book…and I have also thrown away many. Technology changes so fast. Computer books can become obsolete in just a few years. However, some books are still prefer to keep as my memory to a certain era.
Here are some that fill up my bookshelf these days:
And magazines that goes back 10+ years ago:
