seems like most have been covered (nice post 3cpo)
I have done both and would suggest you to start out in soil as it is more forgive for a fist timer, yes I believe coco is more easy to deal with on a every day base when your dialed in and know what you're doing, as it is as easy to fuck up as it is to correct and you have to be a lot more careful when mixing the nuts and correcting the PH (witch should be around 5,6 - 6 in coco and about 6-7 in soil)
coco do give results closer to hydro (faster grow and better yield then in soil) but you need to be "over it" a PH pen would be a good investment and maybe even a ecc pen or one that can measure both so you know your water contains the right amount of nuts and your PH is spot on, another thing in coco is the Ca/Mg so if you dont have a nutrients line specific for coco/hydro you will have to add some extra Ca/Mg (calcium/magnesium) and even with a nute line for coco you might have to help with the Ca as coco kind a absorb the Ca ..
soil and specialy a good soil have most nutrients and micros/trace elements in it to start with and watering will be more forgiven as long as the water go in about 6-7 in PH and a good organic soil with a good active micro life in it will even correct the PH if its off to much ..
only thing I see that will be more easy with coco for a fist timer is the fact that it more easy to over water in soil (as it is one of the common mistakes newbies make) coco is almost impossible to over water ..
as allready mention a good SS (SS = super soil) will take care of most for you, both correcting the PH for you and you wont need to add many nuts yourself depending on what you mixed in to your SS
when I mix a SS I usually make one for my Veg pots and one for my flowering pots (in short there is more nitrogen in the Veg mix and more P. in the flowering pots)
but I also like to mix in about 20-30% coco in my SS (can't believe nobody els mention this already ?) as it make the soil more light and airy, and one thing weed like and is very important beside the right PH when mixing your soil is to make sure its light and airy, weed have a hugh root net and like air to its roots so stuff like Perlite and Lega Nuts is also stuff that is nice to mix in to your SS
beside the things already mention I like to mix stuff like blood/bone/kelp meal, Dolomite Lime/Mearl, Epsom Salt, Bat Guano aso. in to my soil mix ..
but do try to google it, there are many recipes out there, but a basic and simple one, could be 20% Perlite 20% coco and 60% Organic soil with a PH around 6,5 (6-7 is ok) mixed with a cup of Dolomite Lime per 2 gallon of soil mix and then just get a normal basic 2 part nuts line to add once the plant need it (most likely after 3-4 weeks and starting on low)