Am actually new on bitcointalk, I want to know if there are new and promising altcoins
When you look at every white paper, all altcoins seem so promising

Be careful making your choice. Don't trust beautiful words only. Make your research or trust the opinion of professionals.
But of course, lots of promising projects here, on Bitcointalk. You can also look for on the websites, making lists of upcoming ICOs. But don't forget that any team can pay for the advertising. Make your choice wisely.