Ask HN: Advice for a new tech lead?

Luckily, in a more bumbling than romantic way, I just landed a gig as lead developer for an internet television company, and though I'm very excited, I'm also aware I've got a lot to learn.

I wanted to know if you guys could lend me any advice? I've got my own ideas about how to run an IT department, but I've essentially got carte blanche, so staring at the blank page is a bit scary, and I'd like to avoid any landmines. What would you do if you were in my place?

Thanks in advance for your time and consideration HN!