The first sequencer I worked with was Cubase, after which I was advised by Ableton, but in recent years I used FL Studio
But in the process of using, there were a lot of problems with installing plugins, after which I started looking for similar programs
And that's why I'm using CakeWalk right now.
For the above sequencers, there are many video tutorials and tutorials. But with CakeWalk, the situation is different. Which is rather sad, apparently a lot of people do not use it, because they don’t know how to do it