Well, not knowing what you know (if anything), I would suggest you buy a book. The tutorials found on the internet (in my expirience) are awful. If you really want to learn properly, then I can recommmend
C++ Primer Plus by Steven Prata (might be Stephen).
I'm sure others will have their own recommendations.
In terms of what to work towards:
Try making a guessing game where a user guesses a number from 1 to 100.
if the number they guess is lower, or higher then the actual number, then an appropriate message should be displayed.
to complete that, you would have to learn loops, conditional statements, and (hopefully) random numbers. It should get you on the right track to continue learning.