First of all, apologies if this is a stupid question or in the wrong forum. 
I am thinking of investing in a laptop and a wireless router so i can surf the web in my back garden over the summer months. Do some wireless routers/wireless cards in laptops have stronger signal/reception than others?
The only time i have seen wi-fi used was in my aunties house and she could barely get a signal in the very next room supposedly due to "thick walls". Is there any way to guarantee i can pick up a signal in my back garden? I would hate to go out and purchase a laptop and then not be able to use it for the sole reason i bought it for.
All advice, info and personal experience would be greatly appreciated

I am thinking of investing in a laptop and a wireless router so i can surf the web in my back garden over the summer months. Do some wireless routers/wireless cards in laptops have stronger signal/reception than others?
The only time i have seen wi-fi used was in my aunties house and she could barely get a signal in the very next room supposedly due to "thick walls". Is there any way to guarantee i can pick up a signal in my back garden? I would hate to go out and purchase a laptop and then not be able to use it for the sole reason i bought it for.
All advice, info and personal experience would be greatly appreciated
