Someone who is slow at learning
A person who is slow at learning or understanding new information is often referred to as a "slow learner" or may have a specific learning disability that affects their ability to process information at a typical pace.
A scholar. A student is also a person of learning.
When you call a person a sloth it means that person is slow.
An apprentice.
a nerd and a geek
Apprentice, is normally a person undergoing formal training
The trouble that there are sorts of medical terms for someone who is slow learner. A person who is slow to learn maths is dyscalcic, a person slow to learn reading is dyslexic, a person who is slow to learn balance or similar poise is call a dyspraxic. It depends on how easy the skill is to learn, whether the person enjoys doing it and if they practise.
A lifelong learner or autodidact.
illiterate
A person who hates learning and knowledge is often referred to as an anti-intellectual or ignorant individual.
No, as it may seem that looking at a screen, getting information from the person on that tv, like bill nye, isn't really talking to the person in person. Talking to a person for info is social learning. Looking at the screen and learning the information isn't social learning. It may seem that it is social by listening to someone on the tv is social learning by the person on the tv, but no. You must face to face with them if you want to call it social learning. There is your info.
You can say "gradually learning" to convey the idea of learning at a slow and steady pace.