You can use !check to see how many sets the bot currently has which you have not crafted. If you want to know how many sets you can buy for a specific amount of keys use !check [amount of keys]. To buy sets use !buy [amount of keys]. To buy any random sets which you may own already use !buyany [amount of keys]. To sell sets use !sell [amount of keys]

!help
!check
!check [amount]
!checktf [amount]
!checkgems [amount]
!checkhydra [amount]
!buy [amount]
!buygems [amount]
!buytf [amount]
!buyhydra [amount]
!sell [amount]
!selltf [amount]
!sellgems [amount]
!sellhydra [amount]
!sellcheck
!level [desired level amount] to calculate price and amount of sets required.

Lost? Need help? Check the guide & info here: http://steamcommunity.com/groups/TradingCardBot/discussions/0/3223871682612901142/

You cannot use the bot if you are trade banned, got private inventory or haven't activated mobile auth.