Rweb here can fill this need. Rweb can also be used for simple analyses for coursework. In the R programming write, type or paste in the R code R code as if you were submitting a program file. Rweb will interpret each line and return a value as if you were using R interactively at the command prompt. You are welcome to redistribute it under certain conditions.
R is a collaborative project with many contributors.
Getting help To gelp help you have several options. The top menu bar also has a help selection with good documentation.