Already

[Nader75]

I know how to use Already with present perfect , but I dont know how to use it with

present simple and with other forms

[Fazzu]

'Already' a word which tells 'you have finished something before'.

It can be used in Present Perfect as it has a rule:
-already + Past participle.

For present simple,'I have use it already'(I'm not sure you can say this way, but I would say,'I have used it already').