All the networks mentioned above (CPAlead, CPAGrip, MyLead, Mobidea, CrakRevenue) are solid starting points — but worth flagging that "instant approval + crypto payout" together is a slightly unusual combo worth treating carefully, since the lowest-friction networks sometimes have weaker offer quality or stricter compliance enforcement once you scale.
One thing not mentioned yet: check the network's actual payout history and any "didn't pay" complaints before committing real traffic, regardless of how easy approval looks. Easy entry doesn't always mean reliable payment down the line.
For the free guide part, beyond YouTube and old BHW threads, it's worth reading a network's own affiliate terms in full before starting — a lot of beginner mistakes (getting shaved, banned, or payment disputes) trace back to traffic restrictions or offer rules nobody actually read until something went wrong.
I've got verified payment history and terms for a bunch of CPA networks at adswikia.com if it helps with vetting before you commit traffic to one