I assume this is related to KYM in general, and not followers on social media sites and so n.
- Being friends with someone on KYM is not really important on KYM, just becoming friends with people who follow you just makes you seem more approachable and sociable.
- Being followed by someone just means your activity will pop up on their dashboard, if they decide to check up on it, and likewise vice-versa. This basically allows you to get to know the person a little bit better by what they do.
- Becoming a friend with someone is simple. If they're following you, just go to their profile, click the "become friends" button. If you follow someone, just hope they become friends with you.
There's nothing much to it, really.