Lets start first code :
alias "name" "command"
bind "key" "alias or command"
Sample 1 : Drop me
alias "dropme" "say_team Drop Me!"
Then u can create a bind code for this alias .
bind "z" "dropme"
When u press the z this code begin and will say Drop Me! to team chat .
Sample 2 : q+q for Awp
alias +q "lastinv"
alias -q "lastinv"
bind q +q
Also u can make your own alias codes with these commands.
chat_1
chat_0
use weapon_awp
use weapon_ssg08
buy ak47
buy m4a1s
attack
bot_kick
bot_add
+graph