hello i am doing front end course i dont know how to start a codepan to built the portfolio
Codepen is pretty cool (for simple projects like these) but I can see how it might be a little confusing at first.
As far as starting, once you have logged into an account, you need to go to the upper right and do Create/New Pen.
If you don’t understand how to put it all together, that is a little more difficult to explain.
I might suggest a youtube video, like https://www.youtube.com/watch?v=B7W7o_vdWiI.
I would also point out that fCC provides a brief explanation in the set Get Set for our Front End Development Projects.
If you are still confused after these, please ask again. But the more specific your question, the better the answers you will get.