Oldgrizz: Picked this game up a couple of days ago. The tutorial tells how to do just about everything, except. Throwing grenades.
When I select a frag grenade it shows it below my currently selected weapon. I've tried every key on my keyboard to no avail.. Just wondering who knows the solution. Thanks in advance.

mdqp: In case you are still wondering, it's the "G" key, by default, if I remember correctly.

Edit: since you tried all keys, you might have to check in the option menu, I am sure you can rebind the keys.