OK, I'll give it a shot, but I'm at work and some of the particular terms/names might be not quite exact, sorry....
1st, connect whatever source you want into the stereo (1/4") inputs labeled, err....inputs.
2nd, go into sampling mode on the Triton. You should be in the main recording screen for sampling, with a left and a right visual monitor of the incoming signal. You won't be seing it being monitored yet, as you have to set it up to record first. In the upper right hand part of the screen are drop down tabs labeled something like "input setup" or something to do with that, select in one and set them to "L/R"
3rd, hit record once. You should now see the monitor levels start reading the level of the incoming signal. Trim the level so as to make sure it isn't clipping, basically about 3/4 of the bar full.
4th, hit start. You are now recording, do so until you please, but beware you are limited by the amount of RAM you have installed on your Triton.
5th, sample editing. Now comes the fun part. Hit the menu button and select the "sample edit" tab. You should now see a graphic rendering of your sample as a wav. You can brush the sides of the start and finish, as well as the start and finish of the loop points.
6th, convert her to a program using the drop down tab in the upper right hand corner, apply effects, etc.
--Again not completely spot on, but hopefully this will help get you started, and pick through that manual, it's like learning a new language, but one you NEED to be able to fully utilize your new weapon of mass.....err...sorrry.....
Laj