Step S7 TIA Portal

I am entering the UK skills competition in a few moths and have just started working with Step 7 code. We are running the most recent releace and betleve it is called TIA Portal. We will be using S7 1200 PLCs.

I have been looking around for tutorials or books but cannot find and in English that are not intended for people that have been in the industry already and just need refreshing. Do you know of any vidoes, articles or books that would be a good place to start, I am having formal lessons but would like to supplement it with some work of my own.