MATLAB code for Vehicle Routing Problem using Genetic Algorithm ( toolbox / without toolbox )

I am a beginner in Matlab and i need some help for me to understand GA in matlab. Any recommended sources can help me ?

[Grant]

Here is an absolutely brilliant source for learning how to write good vectorized genetic algorithms. It was absolutely vital for my research and it actually taught me quite a bit about writing fast Matlab code. I think it would be a great place to start:

UCL - Vectorized Genetic Algorithms PDF