Cannot update mac OS X 10.6.8
I think my mac OS X needs some updates before practically usable, in particular the network protocol it is using, I think is outdated. For example, I cannot go to most websites that use https, including apple.com. However, I got stuck because I cannot even connect to the App Store (maybe due to the outdated code). I am using mac OS X 10.6.8 on Core 2 dual machine.
Is there any alternate method to do update?
Please help. Thank you.
MacBook, Mac OS X (10.6.8)