Tony,
I am hopeless with the computer,and my righting skills are just as bad
We on here are only interested in what you are up to, not at how good your typing and spelling is, not everyone has the communication skills others possess, we will be able to understand and pick up on what you are on about, no matter how badly written, and as they say about pictures and a thousand words, it will save you a lot of typing. Get the piccies bit under your belt, and you are 99% there.
Just be your normal self, especially if you can throw in a bit of ribbing and humour as well, let us do the worrying about understanding things. I am sure if we get stumped, someone will ask you to explain it again.

Just treat the forum as though you are down at the pub, discussing and showing things to your mates over a pint.
Bogs