Need help with my wordpress site

I paid someone to create my website. Wasnt happy with it, tried to fix it myself. Need more help!

I need the homepage fixing so that it contains a static welcome post, and a box to show my twitter feed not just a twitter button.

I will be getting a logo done to add to the site, which will also need adding.

Whole website needs to be SEO'd.

And finally I have an email address with the domain name, which can receive and forward, but not send.

In general, to make the site look professional, not amateurish like currently.

Timescale - within one week.

I will supply site key on acceptance plus logo once complete.