Dear Sir/Madam,
I saw on the Internet the advertisement for friendship club for learning English and I would like to know if you would be as generous as to send me any further details.
As far as I am concerned, I think that it would be a great idea to attend such a course, because I really need to practice my English. Moreover, I think that learning in a friendly atmosphere would be effective.
Could you write me when the first meeting is going to run? How much does it cost? I will be graetful for any booklet.
I am looking forward to hearing from you.
Yours faithfully,
xxx