For PCs, Comptia A+ Cert, difficult? hahaha nope.avi I also advise you to disregard whatever the cert tells you, it's either inefficient or just stupid, i remember it wanted me to take the entire thing apart to check a cable before just asking the bios, ah good times. It's a multiple choice test that basically entitles you to charge more and you get a nice plastic card to flash like it means something. Now the cert only lasts like 3 years though, mine is permanent because i snagged it before the change, i also have Network+ which basically means i can run cables and build a network to be proud of, combine with the MS certs and diplomas (nvqs) and i am basically a know it all with various titles.
As for apple products, built for retards, by children, broken by retards, of children; but not repaired by them. I personally will not touch a mac because i might catch the herpa-derp but being certified to repair these products will come in handy, fortunately i don't associate with mac owners so i very rarely even have to look at one.
You may wish to revaluate your gurantee, remember, the customer is never right (but should be treated as if they are), they are stupid (why else are they not fixing it their damn self?) and unwilling to learn, prey on this, you don't have to do a half assed job but you do have to not overdo it, you go over the top and suddenly your drowning in a sea of excessive workload which will not pay off. I've done more then my fair share of teamviewer sessions, at one point i was going to use a mouse macro to mimic the repetitive clicks, these days i just use images.
Tell me more of these certification discounts... am i being screwed?
If you want to know more about the certs let me know, i have some material to make this a breeze, it's not cheating to cheat at these low level ones, they are basically a sticker of competence. try this shit on something like a ccna however and your cert is worthless if you can't back it up, cisco tests are more fun, they have simulators.
I taught a 9 year old enough to be A+ certed, and his attention span and competence are... not optimal.