Jim, to really know the mechanics of your car I would suggest three books:
1)"Model A Ford Construction Operation and Repair for the Restorer" by Victor Page. This book was written not long after the Model A era, and I believe geared towards garages who serviced these cars. Has been reprinted many times and the parts houses usually have it. Since it was written so long ago there are some passages that are a bit long and "old fashioned" but I think it is the most comprehensive book on the mechanics of these cars you will find.
2) Pick one of these: Les Andrews "Model A Mechanics Handbook" and Shild's "Model A shop Manual" are both pretty good, I have them both but find I use Andrews more - a little more detail and spiral bound like a notebook, so it lays on a workbench easily. Info in both is pretty close.
3) Compilation of Ford Service update letter reprints, these are also available from the parts houses, I will get you the title if interested, I keep my copy in the garage and both people and dogs are pretty much settled in for tonight. These are good though, especially for troubleshooting.
Now, I know you don't want to drown in books, but one more thought - if you belong to a local club see if they have a book/video library. Both nationals have compiled tech articles that go into more detail than either Andrews or Schild for example, on brakes. Also, I know there is a video out on brakes, not so sure on steering. Also, another advantage of local membership - surely someone in your area has done both of these common tasks, advice is generally free!
Good luck on the work!
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Steve Mackinnon
Nationals: AACA, MARC, MAFCA
Locals: CCRAACA, CMARC