Basic suggestions requested for initial war driving from home

I will state outright that I'm very interested in *learning* how to connect to whatever is (randomly) connectible within range of my home WiFi.

I don't yet know *what is connectible* around my house (i.e., what is wide open) - but that's what I want to find out.

To that end, I just bought a 2.5 GHz Ubiquiti Nanobridge M2:

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Googling, it looks like my amplification will be about 41 dB (about 13 times), given these average numbers from the spec sheet:

Transmit power = ~23 dBm (200 mW)
Antenna focus/amplification = ~18 dBi

Googling, I see "Jeff L." says they lie, so let's just assume 10X for now, which should be good enough to pick up *something* on the radar around my home.

Since, "Jeff L." says the sensitivity is just as important, the figures seem to be (depends greatly on the channel) about:

Receive sensitivity = ~90 dBm

So, given I don't know all that much (but I've googled a bit) about "war driving" (although I want to do so from home), what else do I need to buy or download in order to begin my home survey to find what I can connect to randomly (presumably only open WiFi radiations)?