sex with my girl

So I'm a girl and i have been with my girl 1 year and 4 months but I want to know some others thing that I can do so she can have orgasms we usually finger each other but I get tired and it makes me feel bad because I want to keep going but I can't I really don't know much of this I will appreciated if someone can tell me what can I do and what other things can probably make her have Orgasms or come