When I was learning I looked at both of those, so whatever helps you understand the concepts (each author is different).
Of the two, Hands-on Node.js goes into more topics with 147 pages and I had found to be easy to read and understand. Of the ebooks I had read, I liked Hands-on Node.js the best.
And like Silviu mentioned, some things evolved in the node.js API and installation, but the concepts are all still relevant, and if something doesn't work, just check the node docs for the specific details on an API.
A couple other resources I have come across:
After you try some of these resources out, you should post your thoughts back here to this thread for others to benefit from. It would be nice to have some recent comments from a beginner on what areas were difficult to understand, which books seemed to explain it the best, etc.
All the best,
Jeff