If you're actually new to cryptocurrencies and or programming and development in general, then going straight to developing your own cryptocurrency is a really really bad idea. Start slow, with the easy stuff first. Also, before developing your own currency, definitely study other cryptocurrencies first if you haven't yet.
Thanks for the generous advice you are absolutely right but actually i am a blockchain developer since 2 years but i never work around x11 algorithm. I have experience on scrypt, SHA but not on X series so i want to learn how to use them to create the cryptocurrency as dash.