Gelcoat repair for little nicks/chips like that are really pretty easy. Just did a few on my boat this weekend. I bought a small pint can of white gelcoat from overtons for about $20. It comes with the hardener and is easy to use.
Just make sure to clean up the chip so that the edges are smooth and if possible at a 45 degree angle (I use a dremmel), then clean with acetone. Mix up your gelcoat and hardener and coat the chips with a cheap paint brush or parts brush. The consistency of the gelcoat is about melted icecream, so deep chips may need a few coats. Once you have them built up above the existing surface just sand down with wet sand paper of various degrees (500, 1200, 2000, 3000) and then buff with a marine compound.
The hardest part is finding a proper ratio of gelcoat and hardener by experimenting with small batches, and then the sanding process. I found that 2tbs of gelcoat and 17 drops of hardener works in a paper cup (do not use plastic cups, they will melt).
If the repairs are not white then you also need to get pigments to color the white gelcoat and mix it in prior to application.
Let me know if you need any more specific info.