Cheers klaaas.. keep the ideas coming guys then the people struggling cannot moan
English Grammar In Use by Raymond Murphy. If you want to learn proper English this is the book for you. I advice to buy a paper copy. Many used on eBay.
Otherwise here is a
LINK> Here is free download link :
https://drive.google.com/file/d/1wuPCLHPJhUtyL3vc8ij-611L3PQAzXAe/view?usp=sharingI have a lot of English book files, if you need to leave gmail, I will send you