My step by step guide is as simple as I can make the instructions. I believe some people have made YouTube videos on it, but they just use my step by step guide.
As long as you take your time it's quite straight forward.
As it explains on the download page if those folders are not already present you will need to create a "foliage" folder, and then just copy the entire Oat folder into that.
You place the next road section as a child of the joinNode. The joinNodes are placed so no adjustment is needed of the next road section saving you masses of time when laying road networks.
