I found a youtube channel, he is producing on ableton but his tutorials are also good for LMMS
https://www.youtube.com/user/Z3NWorld
I find his layering tutorials pretty helpful:
Layering Saws:
https://www.youtube.com/watch?v=Q12z0Y6zmS8&t=608s
Layering Leads:
https://www.youtube.com/watch?v=gLb62q7rhhQ&t=302s
Layering Basslines:
https://www.youtube.com/watch?v=pe55LiI2A7E
https://www.youtube.com/user/Z3NWorld
I find his layering tutorials pretty helpful:
Layering Saws:
https://www.youtube.com/watch?v=Q12z0Y6zmS8&t=608s
Layering Leads:
https://www.youtube.com/watch?v=gLb62q7rhhQ&t=302s
Layering Basslines:
https://www.youtube.com/watch?v=pe55LiI2A7E