Przepraszam, spieszy mi sie to bede pisala po angielsku.
I stumbled on to what I believe is a great resource to download all sorts of English learning materials for free.
Here is the link:
http://englishphonics.blogspot.com/search/label/Vocabulary
I have highlighted the "Vocabulary" section because I think there are some interesting books that folks can download/peruse for free.
The following books caught my eye:
"Quite Literally...Problem words and how to use them"
"Practical English Usage" 3rd Edition,
Michael Swan
"Catch Phrases"
"Phrasal Verb Dictionary" (McGraw Hill)
Definitely worth a look, particularly since they are free.
Polecam