Need help finding a pointer using cheat engine

[h4344]

Ok so i looked through a few tutorials on how to find pointers using cheat engine but i think im doing something wrong somewhere because after i find the memory address for the "Memory Save" value for "Calculator" then use "Find what accesses this address" i double click on FF3E5141 - 8B 01 - mov eax,[rcx] then i try a hex search on the value "The value of the pointer needed to find this address is probably (whatever address here)" and i get nothing?

Also kinda attaching a second question to this but what is the "offset"?

I apologize if this is the wrong section by the way.

[Jabberwock]

Watch this:

[h4344]

I dont get ESI though, it also dosent give me an offset.