I'd like to be able to offer my clients help with their self assessment. I've heard HMRC do a course. Does anyone have any links for this as I can't find it on the website.
Also I'm AAT Level 3 qualified and was wondering am I allowed to do self aseessment?
If you practice under a licence from the AAT it's perhaps worth giving them a call to find out. They'll be better placed to tell you what you can and can't do than many here.
HMRC and business link, or business gateway run courses aimed at small businesses completing their own self assessment. I would recommend the ICB self assessment manual, I think non members can buy it, as it's easy to understand.