Is climbing a bit snobby or are we just the new kids on the block?
New kids on the block probably.
TBH I wouldnt even bother with the roped stuff at the beginning, Just go bouldering. That way you can sort of climb together and kids prefer it to the hassle with ropes.
Forearm strength comes with time unless you want to start specific training like finger boards. Best thing initially is, at the end of a session, find something relatively easy and climb up and down till you cant hang on any more.