Anyways, does anyone know if this is a good kit to start with for a beginner? Any other recommendations?
Please post a link to what you want us to judge.
Also, is it possible to add a voice/speaking capability to this particular robot by using other parts ?
Speech can be added to all controllers, as long as it has got free I/O lines.
What is it that gives a robot a voice/speaking ability?
A speach synth. which can be made in several ways - some are based on gluing together phonemes, some have a (limited) vocabulary of complete words etc. They're controlld in different ways as well.
If you just want a limited vocabulary, a specialized MP3 module can be used as well.