Going through all of "vimtutor" and then asking for help on the #vim channel on the freenode irc network should make learning vim as painless as possible.

There is a lot to learn, and vim certainly isn't the most intuitively designed editor on the planet; but it is one of the most powerful editors. So the work you put in to learning it will be well rewarded in productivity gains and sheer number of things that can be done in it that most other editors couldn't even dream of doing.

And once you learn it, vim is actually quite fun to use; and you might find that going back to using more traditional editors is painful, because of their inefficiency and lack of features compared to vim.