Exhaust is pretty much day 1 of 'home DIYer mechanic college' they're easy enough, unless you get a major headache, which can happen in any walk of life.
To be honest the real pain / issues with my exhaust were all down to me fitting replacement studs for the heatshields, which was time-consuming, but worthwhile. Being under the car also meant I was able to spot a couple of bits of damaged underseal, which were allowing rust - had I not spotted them now, they would have been potential for costly welding work in a couple of years. The actual sections being fitted to the car was thrown on in under the hour.
But I'm one of them people that really likes to know what's 'going on' inside/underneath his car. Regular servicing / playing about often reveals all manner of things like brake pipes that are on their way out, early signs of rust, a bolt that could do with a wipe over with an oily rag etc.. rather than just leaving it up to the MoTer once a year (who, for example, missed me having about 1mm of friction material left on my front brake discs, for instance!)