Can someone please correct this short proposal?

In my opinion, you are setting up a very interesting series of documentaries which ?would be of interest to? (depends what you actually mean by the word 'affect') a large number of people of all ages. Please find below my suggestions for four unusual hobbies.

TANGO DANCING
It could be a strange hobby for a man, but this is the point. I have been dancing since I was ten years old. Tango is an incredible (maybe 'incredibly;' - 'incredibly' means that the passion is incredible; 'incredible' means that the dance itself is incredible - either would work - you choose) passionate and intense dance that let people show their deepest feeling. On the other hand it takes huge effort: after ten years of practice I cannot consider myself a good dancer yet.

COLLECT FOSSIL
I collect fossils from (either 'all ages' or 'any age' and from all over the world (you wrote 'word'). I have got around a hundred fossils bought directly from the extraction site or from the internet.

MUSHROOM GROWING
A friend of mine has this incredible attitude (I think that 'attitude' may not bring the correct meaning - do you mean system or way of growing in which case say 'way of') growing mushrooms. He owns some 'yards' is a linear measurement, you need square yards or acres OR hectares - find the definitions - of woodland in which he plants any species of mushroom that can properly survive in those particular weather conditions.

PHOTOGRAPH
Maybe it does not sound as strange as the other, but I am thinking about quantity: one of my friends has twenty thousand photographs collected during his whole life.

These suggestions will be of interest to a large group of people and without any doubt they are the strangest hobbies that you will ever hear.


Many thanks to all of you who will take a few minutes to correct this writing. Bye

You are setting up an interesting series of documentaries which can affect a large number of people of all ages. Please find my suggestions about four unusual hobbies below. 

TANGO DANCING
It could be a strange hobby for a man, but that is the point. I have been dancing since I was ten years old. The Tango is an incredibly passionate and intense dance that lets people show their deepest feelings. On the other hand it takes much effort to master. After ten years of practice I cannot consider myself a good dancer yet.

COLLECT FOSSIL
I collect fossils from any age and from all over the word. I have collected almost a hundred fossils bought directly from their extraction site or from the Internet.

MUSHROOM GROWING
A friend of mine has this incredible attitude towards growing mushrooms. He owns fields in the woods where he plants the species of mushrooms that thrive in the particular weather conditions there.

PHOTOGRAPHY 
It does not sound as strange as the others, but in terms of quantity; one of my friends has saved twenty thousand photographs that have been taken during his life.

These suggestions will be of interest to many people, and without a doubt; they are the strangest hobbies that you will ever hear of.