Engineering a random number generator

[Briggs]

I recently came across the topic of pseudorandom number generators, and would like to ask this community what they know about making one, besides the fact that there are already very good algorithms out there, such as Blum Blum Shub and the Mersenne twister.

I'm not good at dynamic programming and things of that nature (yet; there's always hope), so I'd prefer to busy myself with the more theoretical, mathematical side, which compelled me to make something of this type.

What might people say? Am I being unclear...?