As SDZ stated, a house is a complicated structure. Many of the homes I design the structure for take longer than the design of most office buildings.
I would recommend having a structural engineer do the design rather than you trying to do it especially if you have little or no structural experience. What might appear as a small oversite or not properly tracing the loads correctly could cost you more than the design fee in repairs and/or aggrevation.
But if you insist on doing it yourself, you should:
1. Get a copy of Design of Wood Structures by David Breyer. It is an excellent reference book and will show the actual design of the members. I believe it is up to the 4th edition, but I could be mistaken.
2. Get a copy of the National Design Specification from American Forest and Paper Association
3. Become familiar with the "latest" in I-joists and engineered lumber. You should also get a design guide from Trus Joist, Georgia Pacific, Louisiana Pacific and/or Boise Casacade. You might also want to invest in a good wood design program.
4. Pull out your old structural analysis textbook(s) and notes and review.
5. I assume you have a copy of the AISC manual of Steel Construction, in case you need to size a steel beam size or two. And let's not forget about columns. (PS Lally columns are not steel columns.....lallys are approximately 16 gage steel filled with concrete. They have a capcity of approximately 10 kips depending on length.)
Also, there are other situations or issues that are not explained in textbooks and reference material but you "pick-up" over time. For example, allow for shrinkage of the dimensional lumber in flush framed conditions and don't mix and match dimensional lumber with engineered lumber. (also due to shrinkage).
