Please help problems selecting on mac

Hi i’m fairly new to blender and i’ve recently upgraded to the latest version on the previous one i had i could select in the usual manner for a one button macbook mouse (using command and click) but on the latest version i cant do this. I hope someone knows how to solve this problem?

Thanks

File / User Preferences / Input, select the ‘Emulate 3 Button Mouse’ tickbox

thats brilliant thanks for the help