Don't be sorry. I was new to this stuff once too, do NOT go directly to jail.
Feed that snake an adult mouse once a week. It is a little thin, but not so bad. It shouldn't have that "pointy" spine showing, that's what I think from the photo, but it doesn't look so starved. Some more pics, or an actual weight and age would help the more experienced people here help you. I've only cared for one snake for a long time, some of these people do this for a living. You SO found the right place.
When it gets older it will slow down, you'll feed it less.
Just hang out here and by that time you'll know what's what.