Where do I start

Hi! My name is Linda and I live in the UK.  I started this blog because after reading some other people's story here it seem that it helps them somehow to cope better with depression.  I have been keeping my own journal for at least 3 years now and although sometimes it has helped me realise how bad I was back then, I also understand that there were times that I was better too.
I grew up in Venezuela and lived there 25 years, so although my passports says Portuguese, I feel more Venezuelan than I do Portuguese.  We came to England to try and have a better life, without crime and politically more stable, but there is something that this country does not have, and it is human warmth.  I find it so difficult to make friends here.  I've been here for 8 years now and I really don't have anyone I can call friend, except one person, but it happens to be that I love him as well, and being an impossible relationship, that has left me with nothing.
Where do I start?  I was married (or still am) but separated for over 3 years now.  Quite a traumatic breakup, but in reality, my marriage didn't work, but I was just living life as I didn't know any better.  I then found out that he was cheating on me, which was one of the most traumatic things I have ever gone through, and not because there was love, but because no one ever thought he would do something like that. 
I have since met someone else, but unfortunately the relationship didn't work, although love was not an issue.  I am on my own now, just with my two cats, who have proven to be life saving when I get really, really down.
I don't really know where to start or even where to finish, but I am sure more will come....