I am attempting to do my first self-assessment return for my small photography business. I did my first job in 2015 but am yet to file a return as I saw on the HMRC site that you could file for the previous 4 years if you've never done a SA before. I can't for the life of me find this now but is anyone able to clarify and able to offer any help on how to go about doing this at all? I'm find it all too confusing and there is so much online that trying to sift through it all is getting me nowhere.
Many thanks in advance