Hi,
yes, all of it...
I am not joking... We all went through that, so don't worry, it's not just you.
the best way is to go for a specific store, pick android for example, and make it work just for that store, ask question only related to that store, get the right vocabulary and technical words, learn them, until you are able to explain the process to someone else with the right words ( ID, productId, uuid, whateverID, and what not).
Read as much doc, and also, don't hesitate calling on an expert and pay him the 1 hour it will take for him to get you through the process via a screen sharing session. Weight the cost of that against the wasted time and it's cost...
Bye,
Jean
Bye,
Jean