Honestly, you should get Barry's DCS Companion book for DCS and read it. It's a pretty easy read and it explains much more than anyone could here on the forum. That will give you the basics and then you can ask for clarification, or further questions here on the forum. Those should be manageable and Barry himself will many time provide you with answers. I think Barry's books (he has one for wifi also) are now available on MTH's website. You can always find one of his posts for a link, he often includes one in his replies to others questions. It's also a great reference for future use, I use my copies frequently as I often forget stuff pretty easily. It's much better than the DCS manual and does a good job of explaining things so even I can understand them.
I got back in the hobby in 2011, what changes they have made since I was a kid in the '50s!!! I got that book as soon as I got DCS and read it clear through. Then I hooked up my DCS system and fiddled with it. Then read the book again. I can't remember it all, but I can look things up and/or ask here on the forum when I get stuck.
OGR has a video on using DCS, but it's older and doesn't cover some of the newer features that have been added. I am not sure it is still available, but it does cover the basics and might also be of some assistance. If it's still available it should be on the OGR website in the OGR Store.
There are also a couple of videos and a book on Lionel Legacy. They are available from TM Books & Videos. I am still lacking in the Legacy department, which I also have on my layout. I mainly use DCS, but I do have some Legacy stuff and want to know more about it. Anyway, I finally got around to ordering the videos and book from TM and am looking forward to those as well. They are written by a very knowledgeable Legacy guy and I heve heard they are supposed to be pretty good.
Anyway, just kind of a FYI here. It might help you get up to speed more quickly.
