Hi Becaroo
There are many more reasons to home educate other than just that your child doesn't enjoy school. I would suggest that, now your interest is piqued, you get hold of a copy of Range Education which will tell you loads about how home educators manage in all sorts of different ways, and also about why they chose to home educate.
For us it's about lifestyle, and togetherness. I think autonomous learning is very efficient - in fact recent research has shown that that is actaully the case. While you're ordering Free Range Education, stick a copy of Children Learn At Home into your basket .
Anyway, to answer your questions more specifically:
1."I am not a teacher and have no experience" Me neither - we learn a lot of stuff together. "and was planning to restart my own OU degree in feb next year." I want to do an OU degree some time soon - I studied for a diploma from when my oldest was 1-4yo and it all worked fine.
2.Do read books about autonomous or informal learning - lots on the internet too. If you want to do structure, like Lolapoppins enjoys (and like I think I would too really) then do it, but it does involve a lot of planning (which you may love!) and coercing at times. It's not necessary to be structured though. I bet if you set yourself 6 months of no structure, and just wrote down every day what you'd done, you'd be surprised at the end of it quite how much your DS had learnt.
My DD1 learnt to read without me teaching her; although she did that very young for an autonomously eduated child, but the fact remains, she did it without being taught.
Yesterday we had a huge conversation in the car about war - in Afghanistan, and WW2 and Hitler and invasion. So a lot of history was covered, geography - all in about 10 or 15 minutes of intense conversation at a time that was right for them at the level that is right for them. All the informationw we covered would have taken far longer to do in a lesson and may not have been taken in as well.
3.Would he miss out on all the social interation with his peers? (Some of the children in his class are lovely)
That's up to you! We go to lots of home education groups and my DDs have a circle of friends over and above the number of potential friends she'd have in a class at school of all different ages. It's just lovely to watch them all playing together.
4.Would I get any time away from him?? (Much as I love him!!)
That's my only downside of HE for me. My parents come twice a week and I go out to work for 2h on one of those days, and they take them out to the park or for a treat on the other so I can be at home on my own for a couple of hours. DH makes sure he takes them to his parents for the whole day every few weeks too. My parents sometimes babysit so DH and I can go out for an evening meal too.
5.Read all the stuff about informal learning. Get workbooks. Involve your DS in every day life. He will learn maths from cooking (get balance scales so he can really understand what he's doing), shopping, planning your week, playing with lego. Loads of maths ideas on the internet.
6.I know I could take him swimming and he goes to karate 2 x a week for the physical ed side of things, and I love trips!!! but I am worried about the cost also, i.e. text books, workbooks atc
Yes, I worry about the cost, but you can download a lot of free resources from the internet now and there are loads of good educational games online for free. Use the library. And remember that school isn't actually free - there are lots of costs attached to going to school too.