Creating a beat track for a guitar track..

Anything that doesn't fit into other topics goes here!
Hey guys, I've just discovered LMMS and I've been watching alot of video tutorials on YouTube, but I honestly don't understand what anything in this program is and if what I need is possible. My question is this; I have a guitar track (.wav) that I recorded in another program and I would like to create a drum track for that guitar track. I have no idea where to begin and what to do in LMMS. Any help is appreciated, thanks :D

PS: I have downloaded the drum sounds that I need.

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unfortunately this
http://lmms.io/forum/viewtopic.php?f=7&t=3620
is relevant for you too.
It is possible, but it is not a smooth ride
Okay, thanks guys :D

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@AntsInThePants I'm a guitar player that is learning using LMMS - so I'm happy to share what I've learned so far - I'll send you a direct message and leave it with you to take it any further or not. It's been a great program and I've learned from this forum too :D