only twenty eleven theme experts come in!

I know CSS and php, average level, not too deep though.
any idea is highly appericated.

1) on default wordpress homepage,
how to change the “home” (on the top left, Once you click home,
you go back to your first blog page. )
I wanna change home’s font size, color or use my customized icon to replace it, such as the home button (alt+M) of IE browser. It will look much better.

2) Most of my posts have the layout like this:
(A,B,C,D are pix. E are description words.)
A pic
B pic
C pic
D pic
E…

the pic first, then words right locates underneath the pic.
Normally it works fine. But sometimes, if the pic size is too small,
E will jump to right side of pix. So layout looks like
A E
B
C
D
It looks aweful. The only way I figure out to fix that is using
a lot of return after pix D till E moves back under D. But it’s lame. I bet there is a wise way to do this. The function of “add new post” of wp is not enough, I have to adjust pic and word position a lot every time. it’s just pain in the ass.

3) When I post some pix in a row, like this layout:
A
B
C
There are some space between each pic. How could I remove those space? I dont want to combine ABC to one pic by PS. I know it works but I wanna keep ABC as seperate pics.

4) how to change the post title size?
I think it’s h1, coz I can change the font, but I can not change font size or font color even though I add h1 re-definition in style.css.

5) how to add number count on archive and catagories?
e.g. I have 120 posts on May, I wanna it shows like May, 2012 (120) instead of plain May, 2012.
Even more, there will be a post title list once I click may, 2012.
that would be convenient.

6) how to change “leave a reply” form size?
the default size is too big.