What you can do is that you could download Guitar Pro, and then search for tabs.
As the name explains, though, Guitar Pro is mainly for Guitar players, so if you're looking for a song that doesn't have a guitar, that method won't work.
But if it's a song that has both a guitar and a keyboard, you will be able to see how to play it key by key, and play it in 25%, 50% or 75% speed, to get to learn it.
It's worth giving it a try
