I think you should be a little more specific in order for people to give you any real advice.

From what I can see, all of the ideas which you have listed deal with viable markets. HR, E-learning and Problem-Solving(??) are all useful domains but whether you will succeed really comes down to how you execute your startup.

But I do applaud you for sharing your ideas with the community, I've seen way too many people who are so secretive about their idea.