How to change margins for printing

Now that I’m getting the hang of this theme, I really like it. Two itches remain, both have to do with margins.

1) The homepage I entered as you can see has very tiny margins. I don’t know why, because all the other pages (see for example this page) have wonderful margins. So 1) How can I set the margins of this home page to be like all the others?

2) Question 2 has to do with printing margins. If I print on a desktop, I get my main page but about 1/2 inch on the right margin is cut off. Have tried this on several computers and same thing. (I don’t get the sidebar, which is perfect. I don’t want that.) This can end up cutting off several short words. On the other hand, if I print from my iPhone, I get everything, including the right sidebar, which I would like to be excluded. (I don’t like the plugins, which fix the margins but modify the really great font and formatting you have.)

Any help with either of these margin issues?

Thank you.

The page I need help with: [log in to see the link]