Books to take your IOT skills to next level

hi there! as the title suggests.....what books should i study now to get more knowledge....till now i did a couple of courses,followed many videos and did number projects.......also, programming and logic wont be issue for me ...for i am with computer science background.....could you people recommend me with books, which i should study to get hold of the domain of microcontrollers..... like: arduino cook book or whatever thanks already

sabishaw: hi there! as the title suggests.....what books should i study now to get more knowledge....till now i did a couple of courses,followed many videos and did number projects.......also, programming and logic wont be issue for me ...for i am with computer science background.....could you people recommend me with books, which i should study to get hold of the domain of microcontrollers..... like: arduino cook book or whatever thanks already

best book is internet (: look more learn more every one from beginner