For class Tuesday you need to do two things:
1) You should have read all of House of Leaves, including the appendices. It's not necessary to read every word of every appendix -- for instance, I find the poetry pretty useless. Most of the rest of them are pretty important, though.
2) You should bring a printed copy of the latest draft of your final project. If you don't have a draft, don't bother coming to class: I'll mark you absent. You will be reading and commenting on one another's drafts, and by Thursday you'll post a one-page version of your comments to the blog.
Note: I recommend, but do not require, that you do a substantial revision for Tuesday, so you can get feedback on a version which has been modified in response to my comments.