My daughter had extreme dyslexia.
She didn't retain anything she was taught. She didn't recognise a word from one line to the next.
She couldn't read or spell even her name, when she left school aged nearly nine.
Instead of trying to make her read or spell anything, we backed right off and allowed her education to run ahead, by following her interests, going out and about to museums/art galleries/theatres as well as home ed workshops with the local groups.
We watched TV and DVDs together and talked and talked and talked. I read to her whatever and when ever she wanted me to. We got free story tapes from Calibre to encourage her love of novels-instead of fearing them, as most severe dyslexics do.
We did lots of crafts together and baking and science experiments. We took loads of walks and did gardening/grew our own food together.
We played with all types of kits that we got off ebay/charity shops/car boot sales and from Opitec
She finally began to get reading and spelling aged 13.
MSN was the best tool ever for our daughter to learn to read and spell.
It didn't matter too much if she spelled wrongly, folks might think she had mistyped or was using some form of text speak. It meant she didn't mind having a go. And it encouraged her reading-no teen wants their mother leaning over their shoulder reading MSN messages.
By the age of 15 she was reading and spelling well enough to start her first OU starter course at university degree entrance level.
She is reading all sorts of books now for pleasure.
She still has some trouble with physically writing on bad days-she misses out letters etc. This doesn't happen when she types. Getting her, her own laptop has set her free she says.
For her reading and spelling happened much later than for others-but with no pressure to perform to someone else's timetable (one of the true joys of home ed) it all came together when the time was right for my daughter and not before.
She and I are both still convinced that making her try and read/spell/write before she was ready would have been the very worst thing.
She is now trying to decide whether to do her whole degree through the OU or whether to go to FE college.