What questions would you like to ask to a new ICO announcement to know if its promising or not?
Please help for beginners.

They wont answer you since the things being commonly asked are already on their whitepaper or announcement threads. Some devs or owners would bother to answer you out but majority would directly speak that you must read up the whitepaper or the roadmap. As an ICO investors if you do have questions on mind then its not bad to ask but if its already being written and can be answer by yourself then i guess its not really necessary for you to ask basic things about the ICO if its already listed.