Can you suggest some books or any online source to people from non-accounting backgrounds which would help them in filing their own ITR?

The online submission is available for only a few forms. i.e ITR 1, ITR 2 & ITR 4.

ITR 4 cannot be submitted directly online.

The process for filing is as follows.

1. Just log in to www.incometaxindiaefiling.com
2. Log in with your username (PAN number ) and password ( as given by you )
3. If you're a new user, please select the new user option and get initial registration with the Income-tax website.
4. After successful login, we can find a DashBoard in the top left corner.
5. Click on filing it returns and select the applicable ITR form for you. This depends on your nature of income, I.e whether we shall file ITR 1/2/3.
6. After that ITR form will come in online.
7. This can fill it and keep it as a draft.
8. Whenever you are filing the return, we can edit and submit such a draft.
9. Most of the general information will auto-populate to your ITR form
10. Check everything and submit it carefully.
11. Whatever the submit Mode, ITR acknowledges shall be either e-verified or sent a signed copy to CPC Bangalore.

Hope this is helpful to you.

Happy Reading