There are TONS of topics that talk about Xbox Live.
How do you think we talk about lag and latency if Xbox Live is not available in Lebanon?
This is how to join Xbox Live.
1) Go to
xbox.com and make a gamertag from the website.
2) Buy a xbox live subscription (You will get free subscription the first month)
6) Connect your 360 with whatever method your are using (wired or wireless)
7) Turn on your 360, test the connection
8) When u done with that, go to "Join Xbox Live" on panel of the 360 guide
From there it should be unexplainable because its pretty easy. I hope i gave you enough infomation. Good luck