Sign language is not a difficult language to learn if you have a strong desire. Just you will need to follow the below tips and tricks.
First of all, learn the basics of sign language from the youtube channel @learnhowtosign.

• Practice kit with your friends and family.

• Join the deaf and dumb community and practice it hard with them.

• Now learn advanced asl from the news channels that are only for the deaf and dumb community.

Source: https://learningtoday.net/how-long-does-it-take-to-learn-sign-language/