Hi,
If you're new to C3, check out my youtube tutorials. They provide insights in a lot of popular game mechanics.
A platformer is not included because I find that the majority of the tutorials on construct are on platformers, so I haven't jumped on that platform (pun intended).
For the rest : a lot of useful info:
youtube.com/channel/UCZ6QjvqEs9dR2miRnfFqIpQ
hope that helps