*I need to know the keys for playing other than WS and AD . I can't remember how to pick up objects.

You can check (and change) controls in the Options menu.

If you go into Control Settings you can see the keyboard map. You can also see the PDF of the game manual out on the web.

However, you may have a PDF of the game manual on your game disk, explore it and see. If you got the game from Steam, then you can get the game manual from them.

You don't even have to own the game on steam to be able to access the manual - I can see a link to it on the shop page while not having a steam version of MW.

The Census and Excise Office gives you a brief tutorial on the most basic controls. A few "essentials" would be: readying a weapon by pressing "F", "readying" a spell for casting by pressing "R", opening your inventory with a right-click, dropping items on your portrait to equip them, etc.

You should be able to figure out most of the rest in fairly short order, although checking the key assignments in the Options menu is another good way to handle it.