New Logo for bionicturtle.com

I would like a new logo for my site re-launch

http://www.bionicturtle.com

Here is an images of the new homepage (.jpg). 

Here is the current site.

The site helps finance students earn a professional certification (learn expert finance).

The business is: online learning/teaching of business skills, primarily with rich media (e.g., video).

If the logo conveys any impression, probably should be: LEARNING, EDUCATION. Could maybe aspire to: learning finance.

Optional and subsequent: If the logo-turtle has a personality, and can be adapted, then I will hire you additionally for "action poses" to insert in practice quiz/instructional content; e.g., thumbs up for correct answer given, sad turtle for mistake, pointing to key idea, turtle with light bulb for bright idea.

- Given the name (bionic turtle), I would prefer to continue to "employ" a turtle in the logo. Additional, to convey "learning" or "elearning" or "educational site" or "teaching community" is all good. (does not need to convey finance).
- Vibe is FRIENDLY, CHEERFUL.
- Don't need tagline ("learn expert risk and finance") because I will just add it below the logo; i.e., without is more flexible i think
- Vector, please
- Turtle probably should be green
- High contrast and *not* too much detail/nuance so that the logo can survive various applications

- A realistic representation of a turtle. Prefer iconic or cartoon-ish (or even symbolic)
- A great deal of detail or complexity; e.g., would like to be able to scale down without significant loss