I'm really struggling... This problem needs sorting:

One 20 MG file.

NEED: Unlimited number of people to access it.

I have a free service = I can send a download link to 100 people via their email address = lots of hard work.

I don't have a website.

Tried many times. I fail to overcome:

1). Can't find a free / low-cost host, with cool templates

2). I don't understand how to add buttons that work

3). I need to have a button for: Donations Accepted, OR charge a small fee (via Paypal - I have an account).

How to effect that?

4). I don't understand HTML

5). I need simple way to list with search engines

6). I have a registered Domain name with Microsoft Office (don't like as a host) (don't know how to transfer name) (don't mind if I have to get a new name).

I have free web storage & a URL

(but I don't understand the most effective way to put that to use to achieve aim).

i.e. I have pieces but don't know how to put them together...

I really recommend you hit a website looking for someone to do this for you like www.rentacoder.com Your question really just points out that you have no idea where to begin on a very complicated process.

1). Can't find a free / low-cost host, with cool templates

* Free and low cost don't come with cool templates, free and low cost come with very small amounts of space and no bells and whistles.