Home Page Custumization

Hi, recently i use Custom Community template for my blog. I need a help.

1. I want to rearrange them with magazine theme. I want to make a certain size on every post show in homepage, inside certain box size. How should i do? I want the arrangement seems neatly.

2. How should i write the code, if i want to put sidebar adsense only on homepage and single post. I want to turn off any adsense in page, categories, author page, etc. Where should i write it. Most of tutorial i’ve got, only tell about how to put on homepage only, and single only. I don’t know how to do if i want do both of them, what should i write and where to put it on.

Please help me to do this. So sorry for my english. 🙂
Thank you,
Fania