Monero (XMR) is a new cryptocurrency which is based on CryptoNote code and is not a Bitcoin fork in any way
Main Monero features that were inherited from CryptoNote are Ring Signatures and unlinkable transactions.
Usually Monero software consists of two binaries: bitmonerod & simplewallet.
In the sections below you will be able to find binaries for a majority of operating systems.
Another thing worth mentioning is Monero blockchain.
On the first install you would probably want to shorten the time of wait and download Monero blockchain directly from the website and not from the network.
Please keep in mind that Linux & Windows blockchains are not compatible.