This repair isn't one where one needs years of training to do it for great results. A bit of research on your part and I bet you'd be very happy in the end. Something to consider.
I wouldn't worry about repointing the bricks right now. They don't look bad. You do want to seal the cracks in the cap though. What happens is snow will settle on the cap then melt during the day and water seeps into the cracks. At night it freezes and pretty soon the cap starts breaking off. Go buy a good extension laddar (not a cheap one it will scare the hell out of you) and get up on the roof and seal the cracks in the cap.