The Halachah Masters.
SKU:BIBS1342
"Is it permissible to pour hot water into a cup of cold water on Shabbos?"
"Really, I have lots of questions!"
"That's exactly why I'm here. Look for me on the pages of this book and you will find answers to all your questions and more!"
It is almost impossible to observe Shabbos in every detail. The only practical solution is to study the halachos thoroughly and review them regularly. That way, you will readily know what is permissible and what is not. Without intense and constant study, you might wish with all your heart and soul to observe Shabbos and still not observe it properly. (Mishnah Berurah)