EDIT: Please note, as I write this, the post is now 6 years old and might have some outdated information. I'd personally recommend beginners start with "Learn C the hard way" by Zed and this book since I have heard good things about them. Reading the FAQ put together by the C newsgroup folks might be a good idea.
List of free compilers and IDE
1) Codeblocks IDE integrated with MINGW compiler can be downloaded at http://www.codeblocks.org/downloads.shtml
2) Visual Studio Express Edition
3) Pelles C IDE
List of Tutorials
C programming tutorials 4th edition
http://www.iu.hio.no/~mark/CTutorial/CTutorial.html#Preface
C standard function reference
http://www.cppreference.com
http://www.utas.edu.au/infosys/info/documentation/C/CStdLib.html#Contents
Excellent site for free compilers, libraries, tutorials etc.
http://www.thefreecountry.com/documentation/onlinereferences.shtml
C programming Notes
http://www.eskimo.com/~scs/cclass/notes/sx1.html
Programming in C
http://www.scit.wlv.ac.uk/~jphb/cbook/html/
Excellent site a must see for all newbies
http://www.cprogramming.com/tutorial.html
http://www.physics.drexel.edu/courses/Comp_Phys/General/C_basics/c_tutorial.html
Link to many programming tutorials
http://www.programmingtutorials.com/c.aspx
http://www.freeprogrammingresources.com/ctutor.html
http://www.tutorialized.com/tutorials/C-and-Cpp/1
http://www.techtutorials.info/cgen.html
http://www.intelligentedu.com/newly_researched_free_training/C.html
http://www.cyberdiem.com/vin/tutorials.html
Pointer and other topic specific resources
http://pweb.netcom.com/~tjensen/ptr/cpoint.htm
http://www.augustcouncil.com/~tgibson/tutorial/
http://www.newty.de/fpt/index.html
Advice and warnings for C
http://www.brainbell.com/tutors/c/Advice_and_Warnings_for_C/
Interfacing ODBC and C
http://www.physics.drexel.edu/courses/Comp_Phys/General/C_basics/c_tutorial.html
- sos