When it comes to linking, you can't mash the buttons you have to hit them with a rhythm. And it ain't really no other tip than to practice. Here's how I learn links:

1. Look for visual cues to hit the button on your character. Usually the best cue is the hit the next button when the first move recovers. So wait until his foot goes back to neutral before hitting it again. Once you can do the link from visual cues...

2. Listen to the rhythm of the button presses. From there you don't have to rely on the visual. You can do it based off of the sound of your button presses.

3. Do it with your eyes closed. Once you get that down it's muscle memory at this point.

The good thing about links is that once you learn them with one character you can do them with any character.

If you're on PSN we can run online training.