Definition: to gain knowledge (of something) or acquire skill in (something).
A plural form, meaning "in the process". E.g. "I've been learning a lot." Or "I am still learning."
Verb inflection: to learn from (her/him, etc.) You can change the direction of the palm orientation to indicate whom one learns from who.
Wisdom of words for ASL students: "Learning to sign without interacting with Deaf people is like learning to swim without water." -- Bill Vicars
First 100 words.
As you feel more comfortable with the first few hundreds of ASL signs, progress further with your vocabulary and learn signing more.