Can I create different beats/fills for the same song project by using one instance of Session drummer with the Sequencer. Or to I have to create a different SD track for each verse, chorus, bridge, etc? -ryan

I know this isn't what you want to hear but you may find the piano roll a little easier.
just takes a little getting used to.
 
you can put all your arrangements (verse, bridge, chorus) all on the same midi track.

this video is called  basic midi. hopefully it will explain things a little better.
http://www.youtube.com/watch?v=k83UVo1OiKA 

if your using x1 or x2 try doing some editing in the piano roll, this is where you can tweak fine detail:
http://www.youtube.com/watch?v=ruAnAPR6-hQ

this is how to set up session drummer 3
even though it says triggering, doesn't matter, use a keyboard to set it up the same way:
http://www.youtube.com/watch?v=TjZS61Wg-XY

yes. if you have any problems, place the now time marker a measure ahead and open step seq then add a bass drum.  you can then shift the clip to the end of the last clip on the track.  sometimes ss clips will just keep adding on to the first clip, so this is my preferred working method at this point.

You can also use Step Sequencer with Session Drummer and is my preferred way for drums programming. There is no limit on how many step sequencer clips you may have.

After the first drum pattern is created, you can see the step sequencer clip on the SSD track. Copy / paste this pattern, and on the new pattern, right click and select 'Un link step sequencer clips'. You may now edit the new pattern.

If you did not 'unlink' a newly copied pattern, all linked patterns will be updated by a single pattern edit. This is a good thing, if you have copied the pattern on a few places and wish to update all at once. But on certain fills that are unique, unlink these patterns.

Just an additional note if you're not familiar with SSD Step Sequencer - the default empty step sequencer when opened, comes with limited rows and not all drums sound may be there. You can add row and change the instrument number to see what else is available and edit the name if you like, then save this pattern for your next project.

thanks all, The concept seemed a little fuzzy to me. I wasn't sure if/how you could add a different clip after you've created a verse section drum groove separate from the other instance of it. -R

Insert SD as simple-instrument track for the test.

After starting SD, position now-time to bar 1, click on Step Sequencer - enter any note - after the first note is entered, you can see SD track with a clip.
2 options now to make another clip.

1. Copy/paste - copy the first clip, position now-time to another bar and paste it there. Double click this new clip and the step sequencer windows will open - you will see the same note entered on the first clip - if you add another note and close the the clip, opening the first clip will show the update too, as these clips are linked. If you unlink it before edit, the update will be separate.

2. Position now-time to a new bar number, and click on step sequencer, enter a note and another clip will be created on the track. Clip create like this is unlinked.

Hope that helps.

RY,
just another test when you feel you have the time.
watch the video I posted in my first post:
http://www.youtube.com/watch?v=ruAnAPR6-hQ

now tell me your honest opinion, do you really see the step sequencer being easier ?

nothing against the step sequencer but in piano roll what you are editing is is right there instantly available for listen with the accompanying track" instantly ". meaning there is no go back to this clip/then change it to a step sequencer clip/then back/ if you don't like it/change it back.
this is a headache.

and to be perfectly honest, nothing against the step sequencer but its a sonar tool. meaning if you use any other daw and don't know a little about the piano roll, your screwed.
I think the step sequencer is great for things like triplet beats and tight note configurations, even instrument tracks.

but in the real world of drum editing. the paino roll view is status quo and simple.

I know you basically just blew me off on my post but after watching my video, do you still think its easier ?
maybe now because that's all you know (the step sequencer) but after a little practice, its easy.

theres no more "put all these little piece from the step sequencer together to make one drum track, the piano roll view is all in front of you in one track.

do what you want, someday though you will thank me if you give it a chance.

no taking away from tomi: he has given you some really helpful info and knows his stuff.
nothing personal.

Watch chuck's video, its a great video to show you how create and edit using piano roll view. Here is how I usually do this. You can preview midi loops from the browser. I find one that is close to what I need and just drag it from the browser to the midi track. Make changes/edit exactly as indicated in chuck's video.  I then "pull" the loop in the midi track to lengthen it. if it is not a groove clip, right click and select "groove clip looping" then pull it to extend it. Then go back to the browser to find the next loop/drum part I need or one that is close. repeat however many times until my basic drum track is there. then I go back and edit in piano roll view to add cymbal crashes or other accents or change velocities etc. sounds like a lot, but it is actually very easy.

I don't have the correct software to make a video of the this method, but search youtube, there may be one out there.