I want to build a plane, but I will not be starting soon.

I am trying to learn about building techniques and get an idea of what is involved and available for homebuilt and kit-built aircraft.

I would like to find some drawings or plans for certain types, so I can understand more, I am focusing my search on these types:

A molded composite plane like the Pulsar, or Jabarus (I have looked into the Open Ez plans)

A tube and fabric high wing, ideally an Avid Flyer Clone

A metal skinned, riveted construction aircraft, similar to the construction style of any Cessna.

I am not looking for enough information to build an aircraft, but I am looking to get an idea of what is involved in building each style.

Can anyone suggest where to look for free plans and drawings to help me understand construction methods?