Like I said before I am new in this world of BTC, and I have discoverd that there are other web currency like lite coins and Ripples? can some one tell me more about them, what are the price of them, and where to buy them,
Check exchanges
and if these other currencies and some other that for sure may come out soon, will they jeopardize the value and effectivness of BTC.
No way alternative currencies can jeopardize the value and effectivness of BTC. You can create your own alternative currency if you put in some small effort