Yes
Is The Complete Book of Chess Strategy by Silman good for beginners?
It more of a reference book. So, for a 400 player you need to put it down and have it as a coffee table book or an outhouse read. At your rating, I recommend in order: Winning Chess by Seirawan, Tactics by Seirawan, Simple Chess (Stean), Amateur Mind (Silman) followed by My System. Note: Silman cowrote the Seirawan books so Silman deserves credit. Finally, for entertainment and not study read Logical Chess as you go through those early books. Thereafter, find some openings you like.
Yes, it's good. Before that book I would recommend the book 'Logical Chess'. You have it on youtube as well: https://www.youtube.com/watch?v=0eTB7oHeRgM&list=PLUrgfsyInqNa1S4i8DsGJwzx1Uhn2AqlT
2 Months ago i bought "The complete book of chess strategy" by Jeremy Silman i junt want to ask is that book good for 400 rated players like My Opinion:- I Started Chess 3 month ago so for be it was good i learned many new things I just want to know from a good rated player who have read that