Not a retarded question, though this is a retarded answer:
They're called shin splints, they're incredibly common, and they're caused by overuse. Reduce your mileage, then build up gradually. You shouldn't be increasing mileage by more than about 10% per week on average, and have a reduced mileage week once every six weeks or so. Make sure you have some good, well fit shoes that give you the right support, it is worth getting some fit properly at your local running store.
Barefoot running is a fucking stupid idea for most people. It basically forces you to totally change your gait which for most will not be the right thing. Anyone who recommends approaching barefoot running without reference to a competent running coach or a podiatrist, especially the method described by
@el_4aba7, is either stupid or incompetent and is probably going to cause you injuries if you follow it.
I've run in various types of shoe and zero drop shoes, of which barefoot shoes are a subset, left my Achilles in agony. A mild stability shoe works best for me on road, because I naturally heel strike and pronate a bit.