Have a friend interested in accepting Bitcoin for his restaurant. (In the U.S.) Where could I point him to do research that is easy to understand for a no-coiner? (Vendors to use, how to set up accounting/tax, etc…)

nostr:npub1qny3tkh0acurzla8x3zy4nhrjz5zd8l9sy9jys09umwng00manysew95gx nostr:npub1dergggklka99wwrs92yz8wdjs952h2ux2ha2ed598ngwu9w7a6fsh9xzpc