i like tomatos...
Here's Sarah Raven talking about growing tomatoes outside, some advice on sowing tomato seeds, Chris Beardshaw explaining how to increase yields inside and Monty on using growing bags. There is plenty of other information on the site. You can put 'tomato' in the search box to find it.
Concerning problems there's splitting, blight and mouldy leaves etc. etc., but I don't want to put you off!
Enjoy it - the flavour of home-grown tomatoes is unsurpassed.