My translation of the Tractatus with notes is online here (as a blog) and here (as a pdf).
The blog version has the advantage that people can comment, which allows for corrections to be made (which has happened) and discussions to break out (which hasn't so much). It also has the words of Wittgenstein in a different colour, which might be helpful at times. But it isn't as polished as the 'book' version. A couple of times people have pointed out mistakes in the blog version and I've found that they did not occur in the 'book' version. So that's the one to read if you have to choose.
Unfortunately the 'book' version seems to disappear from academia.edu from time to time. I don't know why this is, but I uploaded it again yesterday and it seems to be there now.
Thanks to everyone who has commented on the blog or emailed me about it.