This site is maintained by a retired teacher. The contents given in this site are freely downloadable (gratis) under a liberal license:
The creation, maintenance and hosting of this site is however not free (gratis). Your financial
support can help me in this effort.
Your donations / support will help me do more and help more people learn more.
How to donate ?
If you are in India, and have a bank account here, your account is most
probably linked to your mobile phone. If you have not done so already, you can install the app. called
your mobile phone connected to your bank account.
is a creation of the Govt. of India. It is very easy to use, and has no cost overheads (unlike bank transfers,
ewallet, Paypal, etc.) Everything is official, transparent, recorded and traceable. Just install BHIM-UPI
on your mobile phone and make a transfer to parthy@sbi (any amount is welcome). Send a mail to
firstname.lastname@example.org as soon as you make any donation.
If you prefer any other mode of payment, or if you have any other queries, just let me know at
PS: Donations from overseas need to follow some additional rules and laws imposed by the Government.
Other ways to support this site
This site carries no advertising or sales propaganda. We are NOT financially sponsored or supported
by any organisation. In addition to your monetary donations, you
can support this site (and the author) in many other ways:
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Please visit our
downloads page frequently. It contains a vast collection of useful resources in many genres. You may consider donating voluntarily,
after you download our material (available for free under a
Creatve Commons license).