I'm so glad I started this thread now, you're all so helpful. I feel better.

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I am thinking (especially since it's raining :-) ), that what I need to do is some planning first and perhaps engage with the direction the garden faces and what type of soil I have got (scary!!!!!!!!). One of the things that is difficult is that the layout of our garden is completely mad (the whole house is completely mad, don't get me started on this one. I do count my blessings about having a house at all ;-) ).
{Feel free to skip the next boring bit}.
We have a long garden because we are in an end terrace. The front 'garden' faces east, and is where we park the car. We have a hedge on one side and a complete mess on the other (someone knocked our hedge down, so I am getting it replaced, not sure what with yet).
We have a small garden at the back next to the house (this all faces west) - lawn with a border - I would like to dig the border up and plant herbs. So far I have got lavender and rosemary growing very successfully, indeed it has taken over.
Then we have a public access path (because we are a terrace), and behind that, more lawn with border, but the border is entirely taken over by blackberries. I know I should get rid of these but we love the blackberries so it's not top of the list.
Then a block of really crappy paving which needs relaying, which I thought I could put grow bags or something on just for this year,
Then a 'veg patch' which is overrun with weeds - I thought I could perhaps just cover for this year and lay some kind of a path over so I can actually get to the back of the garden,
Then a very challenging bit which gets no light at all, under some big trees. I thought I might put a shed here, sort out a compost bin and put it here as well, then perhaps put mulch down to suppress weeds and have it as a place for sitting (nice and shady).
We have some nice trees - apple, laburnum, cherry blossom - so even though I am crap the garden still sometimes looks quite pretty ;-). We have every perennial weed ever invented, though, apart from Japanese Knotweed, fortunately.
{end of boring bit}.
What I would love to grow this year is herbs in the bit near the house (not sure what yet but have got a book), perhaps dig up a section of the overgrown blackberry bit and plant a fruit bush, and then grow salad leaves in a pot and perhaps a Very Easy Vegetable in a grow bag. I know that sounds pathetically unambitious but, hey, it would be more than I've managed so far!
I am reading The Thrifty Gardener by Alys Fowler, so far I am admiring her dress in the pictures and drafting the pattern in my head, that is no help at all.
I am going off to the garden centre this pm to do a recce, it is possible I will manage not to hyperventilate and get no further than the tea shop, in which case the credit goes entirely to Ishers. Thank you all again. xoxo