Where to Start?

[Tig]

I purchased the Agency theme & installed it. Now though, I'm not sure where to start.

I dabbled some in HTML about 5 years ago and played around a little with Wordpress a couple of year's ago, but that's about it. I was hoping to be able to come up to speed quickly but now I'm not even sure where I should begin. Do I try to learn more about Wordpress first, or study Genesis, the child theme or??? Or given where I am, is it unrealistic to think I can come up to speed quickly?

I guess what I'm asking is for a logical order of things to study so that I start to feel comfortable that I know how to begin configuring my site.

Thanks much