Interpreting that as a request to name the textbooks I find useful, I'll do that here.
Elementary mathematics:
Primary Mathematics
http://www.singaporemath.com/Primary_Math_s/21.htm
and
Miquon Math
http://www.keypress.com/x6252.xml
Secondary mathematics:
The Gelfand Correspondence Program series
http://www.amazon.com/Algebra-I-M-Gelfand/dp/0817636773
http://www.amazon.com/Functions-Graphs-Dover-Books-Mathemati...
http://www.amazon.com/Method-Coordinates-I-M-Gelfand/dp/0817...
http://www.amazon.com/Trigonometry-I-M-Gelfand/dp/0817639144...
http://www.amazon.com/Sequences-Combinations-Limits-Library-...
and
Basic Mathematics by Serge Lang
http://www.amazon.com/Basic-Mathematics-Serge-Lang/dp/038796...
and
The Art of Problem Solving expanded series
http://www.artofproblemsolving.com/Books/AoPS_B_Texts_FAQ.ph...
When a student has those materials well in hand, it is time to work on AMC and Olympiad style problem solving,
http://www.artofproblemsolving.com/Books/AoPS_B_CP_AMC.php
http://www.artofproblemsolving.com/Books/AoPS_B_CP_Olympiad....
and also the best calculus textbooks, such as those by Spivak or Apostol.
http://www.amazon.com/Calculus-Michael-Spivak/dp/0914098918/
http://www.amazon.com/Calculus-Vol-One-Variable-Introduction...
http://www.amazon.com/Calculus-Vol-Multi-Variable-Algebra-Ap...
Elementary reading:
By far the best initial reading text is
Let's Read: A Linguistic Approach
http://www.amazon.com/Lets-Linguistic-Approach-Leonard-Bloom...
but there are many other good reading series, including
Primary Phonics
http://www.epsbooks.com/dynamic/catalog/series.asp?seriesonl...
and
Teach Your Child to Read in Ten Minutes a Day
(I devote more time than that to reading instruction, typically, because I use multiple materials)
http://www.amazon.com/Teach-Your-Child-Read-Minutes/dp/14120...
and quite a few others. There is more junk than good stuff among elementary reading materials, alas.
I'd like to edit this some more during the edit window for this comment. To start, the books by Israel M. Gelfand, originally written for correspondence study.
http://gcpm.rutgers.edu/books.html
http://www.amazon.com/s?ie=UTF8&field-author=Israel%20M.%20G...
An acclaimed calculus book is Calculus by Michael Spivak.
http://www.amazon.com/Calculus-4th-Michael-Spivak/dp/0914098...
Also very good is the two-volume set by Tom Apostol.
http://www.amazon.com/Calculus-Vol-One-Variable-Introduction...
http://www.amazon.com/Calculus-Vol-Multi-Variable-Applicatio...
Those are all lovely, interesting books. A good bridge to mathematics beyond those is Vector Calculus, Linear Algebra, and Differential Forms: A Unified Approach by Hubbard and Hubbard.
http://matrixeditions.com/UnifiedApproach4th.html
A very good book series on more advanced mathematics is the Princeton University Press series by Elias Stein.
http://www.amazon.com/Fourier-Analysis-Introduction-Princeto...
Is this the kind of thing you are looking for? Maybe I can think of some more titles, and especially series, while I am still able to edit this comment.