New to RVing.....please help

Underoath1842 wrote:
I just got a coachmen apex 31' and have been reading all the manuals and watching a ton of videos. And so I went there to where its stored and checked all the inventory that it had. Now there were a few things I had no idea what they were....I was hoping someone on here could help me. Also, I've heard its imperative to get a surge protector for electric hookup, is that true? Here are some pictures of what I'm not sure of. Any help is much appreciated thank you.

Ps I'm adding in all the photos I took just in case you noticed something I didnt.***Link Removed***

Several years ago I was camping and a friend was in the next spot.
Lightening hit the huge Pine tree between us. It came down and run in on his electrical system. Fried it.
I had a surge protector. My camper suffered no damage.
I'm a believer.