After you install Bitcoin's standard wallet it requires a massive download to get the blockchain, then it can take days to sync before you can use it. I use something called the multibit wallet because it's only a small download and syncs in minutes after installation. You can download it at this link.

https://multibit.org/

This stickied post says it's recommended by bitcoin.org. Click the quoted post link to read about it and other alternative wallets.