1. You exist (i.e. "you think, therefore you are" - thank you Descartes)

2. Item 1. above provides at least one example of an indisputable truth that you may know.

I'm not at all impressed with the Descartes thought, and it isn't an especially powerful or indisputable premise. It doesn't really do anything except beg the question while adding a detail about the definition of 'you'. It certainly isn't nearly powerful enough to be used the way he used it.