Our school just started using Lucy Calkins this year and I LOVE it! Some of our teachers who preferred the old way of prompts in writing journals are struggling with it a little bit, but I had previously done Writers Workshop so it was an easier transition for me I think.
Basically we ordered for our 1st grade the Units of Study which comes with a set of teacher manuals. These include mini-lessons and a CDrom with parent letters and masters for the writing paper. I would strongly suggest getting it!
I'm not sure what exactly you're looking for but I'll just give you an overview of the program and feel free to ask if you have any other questions. Basically at the beginning of the year we talk about what a good writer does, work environment, stretching out words, sketching pictures, using the word wall to spell, etc. Those are the brief mini-lessons, then they go to their groups and get their basket out. In their basket they each have a folder, some blank paper and a cup of markers and pens. They share these between a group of 4. They work on their writing and pictures (Lucy says pictures come first!) After their writing we meet back together as a group and share. I ask certain students to share who I noticed used what I taught in the mini-lesson, that way it is focused and doesn't take too long.
At this point in the year we switched to a paper with more lines and less space for pictures. We also switched to only pens so that the kids would be spending less time drawing and more time writing. They also work with a partner now instead of in a group of 4. In the next few months we'll learn how to edit and revise, write poetry, use correct grammar, etc. for the mini-lessons.
Hope this answers your questions!