Can someone please help me With digital earthworks

[buckets1991 (A)]

I cant figure out how to use it

[TwizardT (A)]

take a look at thec4detonators trackbuilding kit, you can find it on this site just search for it.
since you didn't specify what you are struggling with, this should give you a start

[Darkslides19]

Or al167's track building tutorial.. its old but u can still get the basics from that