How to jump on the container near the T spawn on cache

You can't get rid of these little shakes when you shoot and aim down to compensate the recoil. It's only possible, when you're using "sv_cheats 1", so it won't be possible in any server. The NiP aim is not smooth as you think. It just looks like it's smooth, because you're a GOTV spectator. On GOTV they turned off this visual shakes, to make it more watchable for a general public. Try, instead, to get used to that. The shakes appears to annoy a little less when you play at 128 tick rate servers. Try that too. Good luck and keep practicing.

Go to the options in CounterStrike : GO and disable the Game Instructor Messages as seen in this screenshot:

This should stop the game from annoying you in the future.

Another method would be to open config.cfg in your CS GO Folder (after you removed the mentioned read-only flag) with a text editor of your choice, such as Notepad++. You can find the file in X:\Steam\SteamApps\common\Counter-Strike Global Offensive\csgo\cfg (X being the hard drive you installed it on). Then find the line where it says gameinstructor_enable and set it to 0 or, if it is not there, add gameinstructor_enable=0 at the bottom of the file. That should do the trick.