Here's my 2 cents, Cheick. I'll go one by one as I read it and will leave my comment on your site later on after this post.
1. Para 1 and 2:
I am here to tell you... I am going to tell you... Redundant in 2 paras.
Free ebooks/books for free... also redundancy issue

2. Para 3:
"Now that I have told you where to get these free books, I will tell you where to download free books." Again redundancy 'free books'. Might change the latter to 'them'.
Spelling 'to chose'. Should be 'to choose'

3. Para The Library
Give one space between Library and (NYPL).

4. Last 2 para:
Spelling 'recomedned'. Should be 'recommended'.

5. You might want to link some to your affiliate link. ;) Just a suggestion.

Thanks for sharing, Cheick.
Jenn

Left you a comment on the site. Here I will say that the firat paragraph felt a little like keyword stuffing because I started to notice free ebooks. You might just want to cut one or two of them to keep the almighty Google algorithm appeased. Orherwise, good site and great post.

I did it - but I think the captcha thing got me again. I despise those silly things. Yours ate my comment, and did not let me retry.

I have leave a comment on your website.