Why I can't find modern books on conic sections and analytical geometry? I want to learn analytical geometry but unfortunately I can't find any modern book on this subject.
On this site I found a question Good books on conic section. But all the suggestions given is more than a century old. I tried two chapters from the two books suggested and I can't take it anymore.
My problems with old books are  
1) They are difficult to read due to the language used. 
2) The problems given are so cumbersome and provide no insight,.I don't hate hard problems but problems in old books are like "factor this 5 degree polynomial". 
3) Not really a problem but the formatting is really bad in them.     
My question is why there is no new books on this subject, new means after 1960s-70s, is there no mathematical interest in conic sections ? or just sales of these books are not enough to make profit ?  
 A: Here are some English titles on this topic written in the last few decades.


*

*Analytical Geometry, Pogorelov (1978, English translation 1980)

*Analytical Geometry, Spain (1963)

*Analytical Geometry, Vaisman (1997)

*Fundamentals of Linear Algebra and Analytical Geometry, Bugrov and Nikolsky (1980, English translation 1982)

*Lectures in Geometry, Semester I: Analytic Geometry, Postnikov (1979, English translation 1982)

A: At a certain point, maybe the 1960s, two separate courses were combined into one course: "Calculus and Analytic Geometry".  
The calculus text I used back around 1970 had a discussion of conics.  In particular, rotation and translation of coordinates to put the conic in a canonical form.  
But I guess over the time since then, such things have been reduced considerably (or even eliminated completely) from the course.  And perhaps the course is now called "Calculus" again.
A: I recommend looking at the following two books, the first published by MAA and the second published by AMS.
Conics by Keith Kendig (2005)
Geometry of Conics by A. V. Akopyan and A. A. Zaslavsky (2007)
Regarding older books, this one is probably my favorite:
Elements of Analytical Geometry by George Alexander Gibson and Peter Pinkerton (1911) [see these comments]
