Rabbi Elozor Barclay and Rabbi Yitzchok Jaeger in Jerusalem have written several excellent books. These books are designed to answer the most frequently asked questions about Tefillot - Prayers, the Sabbath, Festivals, Candle lighting, Separating Challah, Berachot (Blessings) and The Three Weeks. More books are in the planning and will be released shortly. The Guideline books can be obtained directly from the following links:
Link to Guidelines Books written by Rabbi Elolozor Barclay and Rabbi Yitzchok Yaeger of Jerusalem:
https://targum.com/section.php?xSec=351&xPage=1&jssCart=1eecbdac91de5f82c7176cfd79ccfb8d
https://targum.com/section.php?xSec=351&xPage=1&jssCart=dba4e328bc6f0c7f076ca62b82351c43