For your first try at tomatoes, I would recommend a bush variety. I live in the U.S., so I'm not sure what your hybrid varieties are called. Here's a picture of what I'd like to describe:
http://home-and-garden.webshots.com/photo/1384 313338044734647ZJNNkY . The variiety I prefer here in the U.S. is Early Girl, since we don't have a real long growing season in the mountain west. It's always performed well, is disease resistant and is either adaptable to table serving or canning.
I say bush variety as opposed to climbers. They don't actually climb like a vine, but do need a lot of attention in staking and tying up. Seen here:
http://sof.cfans.umn.edu/26Sep2005.html?galler y=dff5ecd9-4072-4ffa-a787-74f15cef37d8&image=P 1010180.JPG . The advantage is that they don't spread out and they're kept off the ground which lessens the chance for blights of one kind or another. My favorite is an heirloom tomatoe seen here:
http://www.tomatobob.com/Black%20Krim%20Tomato %20cr.jpg ... it's
Paul Robeson and is dark red to almost black in color, takes about 72 days and has the most delicious tomatoe taste one can imaging. I go to the garden late in the summer and cut one to be eaten right in the garden with just a little salt... Heirlooms are tomatoes that are original in breeding and haven't been hybridized... ever!
Best of luck!