I am starting to learn C++ and have only done book work so far (learning syntax but not applying anything yet). 
My goals are to develop applications and competitive programming (code forces, top coder and USACO). 


I use a Mac OS X, version 10.7.5, Intel Core i3 3.06 GHz processor, 64 bits.


Does anyone have recommendations as to what to use to program?  I have heard of dev C++ (Orwell), Xcode and Codeblocks. 
Also, if there are any tutorials on using these platforms, please link me to them.


Thanks.