In the meantime, get the Bingelis books and study them. A lot of the stuff is outdated or irrelevant, but all is fun to read and the material provides an excellent background that you can draw from when building. For me, the series is a "must read" for anyone building a wood or metal airplane. In fact, I would almost go so far as to say that if you find you don't like reading those books you might not be a prime candidate for building an airplane.
But as was stated, the plans can be overwhelming at first but, when you start building, you will soon be picking out the details. Don't worry.
Also, as you are waiting, read the old messages here. Start several years back and read everything since then. Make notes on things. There are a lot of hidden gems in the old posts that will give you insight into the building process and what to look out for. And every once in a while, you read something that just might save your bacon. For example, a recent thread mentioned the o rings on the AN825 fittings. Huh??? You use o rings? I had no idea and that little thread might have saved my life.
Good luck on the IFR training!