What do I need to know before I use Wappler (Coding)

Hi everyone, I searched this forum but I can’t seem to find a complete answer.

I was wondering if I needed to know how to code to use Wappler and If so, what do I need to know? I already know a little about coding (HTML, CSS, some PHP, Bootstrap)

Since it’s only a 7-day trial, I wanted to spend the time learning how Wappler software works instead of brushing up my coding skills.

So before I start my trial, I wanted to see if I needed to refresh my skills.