The website is just barely functional and allows you to do things if you have lots of patience and luck. The drawbacks being:-
You need to give password when trying to see booked tickets or to do cancellation. It is really frustrating.
The website doesnt show the route, availability and fare on the same page. You need to select the individual buttons and then only the site takes it sweet time to show you the details. They have got 100 pages to show you things that could easily be acomodated in a single page.
You can select only one class. If it is full then again you need to select different class to see the fare, availability etc. Why cant we select 2 classes and see the availibility.
It is high time they upgraded the usability and user friendliness of the site. The site admins are probably some low performers from some top IT companies sitting there just idling their time and wasting government expenses.
I am just recommending it becuase there is not other alternative to this.