If you are a non-profit and you are seeking small grants, they are often
given through a competitive process by foundations and corporations. Most are
for $5,000 or less. You can often find information on such grants at your
local library by contacting the Research librarian. Be aware that you must be
a non-profit and the competition is fierce for the limited funding available.
If you are a for-profit business, you can forget about grants unless you have
invented a new technology or will use natural resources in a unique way.

Federal grants are typically aimed at specific industries and targeted causes identified by the government, such as scientific and medical research, conservation efforts, and so on. Check out this blog for more information. But other options, like loans, may be available to help. Good luck!

A federal grant is an award of financial assistance from a federal agency to
a recipient to carry out a public purpose of support or stimulation
authorized by a law of the United States. Federal grants are not federal
assistance or loans to individuals. While a lot of late night infomercials
might lead you to believe that the government has millions of dollars that
they are just giving away, the truth is that the majority of grants go to
municipalities, research, and non-profits. Very few grants are available for
individuals or for profit businesses.

You can write the application yourself, but the first thing that you need to
do is find a grant for which you or your business qualifies. If filling out
paperwork is not your strong suit, you can always ask someone to help you.
But spending any money without a clear program to apply to is not a good
idea. For more information go to grants.gov get familiar with it and read up
their FAQ.

This is what it says at the beginning of their FAQ:

Step 1 - Find Grant Opportunity for which you would like to apply
Step 2 - Download Application Package
Step 3 - Complete the Registration Process