i say,

go through lite-c tutorials, read manual when needed, and do your homework yourself, people will help when you need and ask spesific questions, but wont code your homework for you(unless you pay for it).

and i dont think paying for it is a good idea, if your instructor of that lab said you will use a7 he/she probably checks this forum.

also this taks are mainly pretty simple, you can do it yourself.