Hello Nikhil.

According to me Ace is A better postal coaching for Civil Engineering Gate and PSUs.

The study materials provided by them is quite decent and good.

You can also refer to online notes and study programs for better understanding. Handwritten self made notes are quite better than the study materials provided by them. So if possible try to make your own notes. It will take some efforts but is lot more beneficial than the ones provided by them.

Hope it helps you.