confounded site-title font size

I have just installed the raindrops theme for my site and in trying to fix some font issues, I’ve managed to lose the supersized font for the site-title at the top. The site is https://www.thespacewriter.com/wp and yes, I am changing the database signifer once I”m done with this theme change. So, when it first installed the name at the top which is now small was quite large, like 72 point type. How do I fix that?

Also, I’d like to ‘move’ the right column over a little bit so it doesn’t look so crowded. How might I do that?

Finally, I’m getting some odd error messages such as:

warning: invalid argument supplied foreach() in home/XXX/XXX etc the location of my files on line 1248

I also get:

warning: array_merge()[function.array-merge]: Argument #2 is not an array in (home site).

I’m not a php wiz, although with my previous (easier to use theme) I was able to figure things out. These issues are stumping me. I can’t seem to figure out what font size call to change, indeed I’ve tried changing site-title AND h1 and .h1, but none of the changes seem to work.

Now, mind you, I would have been working on this in the background, but the other day I decided to “preview” a few themes, and it turns out doing that “blew away” my other them, plus the latest changes I’d made. I did have a backup, but not a very recent one, as (‘d been planning to change themes for a while now. So, yeah, onus is on me for not saving the stylesheet more often (last save was a few months ago), although I do backup my blog and database every few days.

Anyway help you can give is greatly appreciated.

ccpetersen