You know there's a forum here that deals with making hash; check it out.
Using male plants results in low-quality hash, and not much of it.
But waaay better than nothing.
You can also cure the leaves and smoke them, though some people say it gives them a headache (it's never given me or anyone I know a headache though).
You can extract the THC via butter or alcohol and use the butter for cooking or the booze for drinking.
Try this reciepe:
Ingredients:
marijuana leaves
tequilla
margarita mix.
Use a half-empty bottle of tequilla. Crumble a lot of dried leaves into the bottle, as much as you can.
Keep the bottle in a warm dark place and shake it up daily for a week.
Then strain the mixture through like a t-shirt or coffee filter into another container.
Then use as you would regularly use tequilla to make Margarita's.
Of course you can use any kind of high-alcohol booze and you can drink it straight if you wish.
Since your from Ireland (they may not have tequilla there), make it with whiskey.
Or simmer the crumbled-up leaves in butter or cream for 45 minutes, strain through a t-shirt into another container, use the cream or butter to cook with or simply spread it on a cracker or toast or add it to your coffee.
You want to harvest a male plant as soon as the balls (pollen sacs) appear.