Good start is to create p2p exchanges, it could be for buying BTC, but it could also be for buying used books from neighbors... (I wrote quick tutorial here SN/7424 and here's similar more detailed protocol).

You could also take some inspiration from the "Galoy" type of communities being deployed in different countries, e.g. here in Costa Rica they started at local farmers market, they did learning sessions the farmers, they gave them the customized App (based on the Galoy sourcecodes, same as El Zonte...)...

Another thing is to just find your local butcher or farmer and buy from them directly with cash and pitch them Bitcoin over time and teach them how to accept it. This goes a long way. Similarly if you go for dinner with your friends, pay them back with sats over LN (e.g. get them on Muun, SBW, WoS or similar). If you see some street vendors, ask them if they accept bitcoin - there's a chance that they will ask you what it is and how to accept it. Especially outside of US people on the street get it much faster.

If you want to know how NOT to do it, look at the BCashers trying to do this in some Caribbean island nations (e.g., St. Kitts, which is from where Ver now has a passport).

They target some merchant, get them to agree to install their app on the merchant's existing point-of-sale device (or their personal phone, for a mom & pop, or whatever).

And the next thing you know they are plastering BCH stickers everywhere inside and outside the joint and then proceed to "interview" (recruiting, hard sell, ... otherwise known as pestering) the shop's customers (e.g., diners in the restaurant) giving them a small amount of "free" BCH, and then pressuring these victims into buying their shitcoin (from their shitcoin exchange) and to use that to pay the shop at checkout.