I find everyone else's ability to just shit out a massive tower in seconds very intimidating.
If you're ready to practice building, go to Moisty, stock up on wood (trees give most in moisty, like 100/tree), and practice building 1x1 structure.
(since I had purchased the base game, I did some practice in the PvE mode)
Make sure turbo mode is on, I believe it's on by default... (holding down mouse-button will auto-place the structures, don't need to individually click)
Rebind the build keys to something more comfortable
Remove the rotate binding, or put it somewhere you won't accidentally hit , by default it's on R... if you try to reload in build mode you're going to flip your walls/stairs etc by accident.
I moved my build keys to Tab, Q and E... I've also seen people use Z, X, C... Ninja has them bound to his mouse keys.
I keep Pyramid on F4, if I really want it I'll mouse wheel to it.
I completely unbound rotate, don't need it except for downward ramps... you can preset pyramid to downward ramp if you want.
I've kept my Edit key on G.
It's really not hard to get a super-structure built once you have the muscle memory down and turbo mode is on.