What do you feel sucks the most when learning something new on the internet?

Assuming you have time to learn something new. A new topic you know nothing about. Not to deepen your understanding of a topic.

And that it is by yourself, not classroom learning. That is, self-teaching. In the process of going:

From: "I want to learn X" (e.g. Spanish, Arduino, Rails, How to build a startup?, How to play guitar?) To: "This is the resource/link/blog/book I am going to use to learn"

What's your biggest frustration? What do you hate the most?

Would love to chat beyond here, DM (@rjgonzo) me if you want to chat some more later.