The class will take place at (somebody's) home so please let the participants know the address.
The class will be held at (somebody's) home so please tell everyone the address.
「自宅なので申し込んだ人に住所教える」＝ The class will take place at (somebody's) home so please let the participants know the address. / The class will be held at (somebody's) home so please tell everyone the address.
ボキャブラリー
class ＝ レッスン、教室
take place, be held ＝ ～で行われる、開かれる
home ＝ 自宅
let ～ know, tell ＝ 教える、知らせる
participants ＝ 参加者、申し込んだ人
address ＝ 住所
I only give my address to people who have signed up for the class.
I don't share my address with people until I receive payment.
この場合、次のような言い方ができますよ。
ーI only give my address to people who have signed up for the class.
「クラスに申し込んだ人だけに自宅の住所を教えます」
to sign up で「申し込む」
ーI don't share my address with people until I receive payment.
「支払いを受け取るまで自宅の住所を共有しません」
to receive payment で「支払いを受け取る」
ご参考まで！
イギリス 
カナダ 
