I have a question about spell check

[cooltwou]

Is there a program that you can put on a Windows 10 laptop & 
do a spell check on an ebook I downloaded & have been reading
On my Kindle Paperwhite because whoever uploaded the book
must have never run a spell check because you can’t understand 
A lot of words in the book you just have to guess at them &
that’s just really annoying right there.

[neanderthal]

There is a free app called Calibre Ebook Manager:  https://calibre-ebook.com/about

After installing it and loading the book, you can go to the Edit tab and you will see a spell checker.  You might have to convert it to another format to edit it, but Calibre can do that and you can just convert it back when you're done.

[cooltwou]

Ok I have that program but I have one question:
If you run the spell check how do you find the correct words the Author would have used if you don’t know what they are

[dueda]

... an ebook ... you can’t understand ... words ... you just have to guess ...
If you run the spell check how do you find the correct words the Author would have used if you don’t know what they are

You can't guess other people's words, it can be anything, it can be intended to be that way. Find another copy if fixing that is too much hassle.

[cooltwou]

Is there any program that can match the quality of the book you are reading online so it will match the book sold on Amazon or in a store like Walmart

[dueda]

I suggest you post title and author, or the Amazon link, in the requests section. Maybe someone can find it on some books site.

[cooltwou]

I have already found it & convert it & put it on my Kindle Paperwhite my problem whoever did the book never checked the spelling or grammar at all.
Also I have run into quite a few books with bad spelling and grammar

[dueda]

I mean other torrent / download source: Same book title, different digital version.

Most uploads are made by home users with low quality hardware, default settings, lazy handling, and no checking at all. Sorry, not much one can do about it.