Would anyone know of an English, practical sefer on the halachos of Birchos Krias Shema and the rest of tefila (i.e. Shmoneh Esrei , etc. ? )
Artscroll has a very good Kitzur Shulchan Aruch over three volumes for the basic halacha, but it is hard to ready from cover to cover, and still quite complex. Some people have a practice to read a few pages a day until they cover the whole sefer - then start again - it is an excellent way to have a general overview of all practical laws and know where to look deeper. Also exists on the iPad now.
The Laws of Daily Living by R Simcha Bunim Cohen is likely closer to what you are looking for. I have read all his Shabbat halacha books and he writes in a practical and easy to understand style. Check the table of contents though (at link above) as he stops at psukei dezimra in volume 1 and volume 2 is not out yet.
For an in-depth book in English: Hilchot Tefillah by R. David Brofsky https://www.ou.org/oupress/product/hilchot-tefilla-a-comprehensive-guide-to-the-laws-of-daily-prayer/