pls tell some site or other pdf with snaps also(from where i can get complete information about gym exercises and timings,diet and others)
I would recommend joining the Bodybuilding.com forums (no, it is not just for bodybuilders, just health-enthusiasts in general). There are sub-forums for each of the topics that you’ve mentioned, and many more. There is a great access to knowledge there, joining is free, and you will get answers quickly because it is the most populated forum of its type. If you are a teen, there is also a teen section in which teen-specific questions can be asked, discussed, and answered.
Good luck!