Course of english English Course Enquiry

Dear Sir/Madam,
I have seen your advertisement in a board for an English course and I want to communicate that I am very interested in taking part in your english course because I would like to improve my English fluency.
Firstly, I wonder I'd like to know when the english course starts and I also wanted to know if this course is it's available in during the summer because I would be interested in doing this course in that date then. (I'd revise this line: possibly change it something like "if it's available during the summer as that would suit me more")
Secondly, if it is possible, I would like to know the experience of the teachers and the course because I have never heard an opinion of this programme of study.
Furthermore, I would like to ask you about the price because in your advertisement it isn't very clear if I have to pay for the food or if it is included in my the price. I also wonder if Also, are all course materials included in the fee? (Just to change from using the word 'price' a lot) 

I don't know nothing of anything about Derbyshire, so if you could recommend me the best way to go to Derbyshire get there from Spain, I would be very glad.
Do you think that flying to Manchester and later go to then going to Derbyshire is the easiest and the cheapest way to get there?
Furthermore, I would like to know what activities can I I can do in Derbyshire in my free time.
Looking forward to hearing to from you soon.
Yours faithfully,
Mario

Remember that in English, double negatives don't always work like in Spanish, no sé nada sobre... -> I don't know anything about. In spoken English you might often hear "I don't know nothing", but I don't think it's grammatically preferable to "I don't know anything". So, either "I know nothing about" or "I don't know anything about".