2 Questions

Question 1:
Where should I learn C++? I tried cplusplus and learncpp.

Question 2:
In Visual C++ 2010 Express when I try to debug it says there is an error so I run last successful build and it says this:

Please help

Silly question, but did the project ever successfully compile? If not, there is no "Last successful build" for it to run.
Check the folder location: is the .dll file actually in there?

Post a screenshot of the code area that has the error. ? (Post the actual image url, not upload to mpgh)

Since you're apparently new, I assume it's not important code? Just erase the project folder and start a new one. What code did you put in to get the error? Starting a new project and pressing Run shouldn't have any errors by default. ? And which C++ project type did you select. Windows Forms, WPF, console, CLR, win32? I'm not sure what your error is other than "won't compile".