Formal:
* Aujourd'hui, j'aimerais parler de moi. (This is the most direct and formal translation.)
Informal:
* Aujourd'hui, j'ai envie de parler de moi. (This emphasizes the feeling of wanting to talk about yourself.)
* Aujourd'hui, je voudrais te parler de moi. (This is more personal and direct, suitable for a friend or someone you know well.)
You can also add context:
* Aujourd'hui, j'aimerais parler de mon expérience. (Today, I would like to talk about my experience.)
* Aujourd'hui, j'aimerais vous parler de mes projets. (Today, I would like to talk to you about my projects.)
The best option depends on the context and who you are talking to.