I hope some of these may help:
1. Its always good to follow C++ coding standards while writing any piece of code. Have look at
C++ Coding Standard
2. For C++ tutorial have look at
C++ Language Tutorial and
C++ FAQ LITE
3. For STL have look at
C/C++ Reference
But above all i will recommend to read book Thinking in C++ (both Vol. 1 and Vol. 2) by Bruce Eckel. The legal soft copy of book is available for free download at Bruce Eckel site, check link
Bruce Eckel's Free Electronic Books
I would also recommend to read article posted on sites like
CodeProject. Free source code and programming help and
CodeGuru
-Pradeep