<human>: Can you provide a brief rundown of the text in within 3 sentences?

I'm not really good at saying no and I don't really have any friends... 

Anyway I'm taking a called introduction to object oriented programming this semester with a professor I know because I interacted with her in the past. She's never worked with java at all (she did electrical engineering and they learn C++ instead of java) so I have to help out in class a lot if something doesn't work or (because she doesn't speak english very well) I have to basically get up and explain what she's doing. I don't blame her for that she basically got shoved into teaching this class by the administration but..that's not the main issue.

Because I know her knows what I know (which while not extensive is more than enough to get me through an introductory course) and she pointed out on the first day of class that students were allowed to help each other with assignments (as long as they don't straight up share code) but then she commented that people aren't supposed to ask me for help and then she talked to me after class that I'm not supposed to help them.

Well everything went well no-one really talked to me..until class on thursday (recitation) when on the way back I was stopped 3 times by people in my class asking me to help them install eclipse and help them with the first program (it's just commenting some code and showing you can use an escape character that's all it is) and I wasn't really sure what to say... One of them came up to me (I can't remember her name) and she said she would hang out with me if I helped her with it (IE did it for her) the other guys just told me to come over to help them with it. 

I'm not really sure what to do. I don't want to be mean and say no but I dont' want to get in trouble by helping people when I'm not supposed to..And I feel like one of them might want to be my friend. I'm very confused.
<bot>: How do I say no to not doing other people's 'work for them' without making them upset...Should I say no? Or should I say yes and try to make a friend?