What blueprints am I supposed to use?

[kast]

When starting out the game, there are a huge amount of building designs to choose from, most of them being too large and complicated for a stone age town. As someone who is new to this new system, how do I know which design to use for each building? Can I just use a default design? This aspect of the game seems so overcomplicated that it is sort of ruining my experience. I shouldn't have to scroll through every single design to try to find a simple building that I am actually able to use.