Ron, not every seed is going to grow. This is normal and is called the germination rate.
If you had a 100% germination rate every seed will grow
80% germination rate means 8 out of 10 seeds will grow and so on.
Different varieties have different germination rates. Storage conditions and age of the seeds can affect germination rates.
All seeds contain enough energy to allow the first "seed leaves" to get above the ground and into the light where they can start making food for the roots. Seeds do not need any fertilizer or help to do this.
Brown spots on your paper towels are probably just some color from the seed coats or they could be dead seeds that did not germinate and are nothing to worry about. You did not do anything wrong.
Try not to worry so much. It's a natural process and really does not even need any help from us to happen.
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