I need help with Attiny45

dear friend I need help
how to put my tinny45 in sleep mode ?
ho do I define any port as interrupt (wakeup and excited program )

best

One of us will need to read the Atmel Attiny datasheet. I'd much prefer if it was you.

If there is stuff you don't understand and you refer me to the section of the datasheet I will try to help.

...R