How to connect AdMob to the app?

Hello everyone I’m trying to connect AdMob to my application (android) and maybe I’ll seem like a rookie, but I don’t understand how this can be done. I have absolutely no experience in creating ads.Can anyone write a detailed instruction of the connection of advertising (video reward) for the application? I tried to connect a lot(according to the Solar2d documentation), but obviously I make a mistake(s) somewhere and the application does not start. I really hope for your help!

You should post your ad code and relevant section of build settings. Put X’s in for your AdMob IDs to protect them.