First letter

Hi dear sirs.
It is my first post on italki and I am not sure what I should write. Now I am sitting at work, looking at the PC and out the window. The weather in Moscow is cold and wet, yesterday it snowed and now it lays near the roads.
My mood is fine because I am 30 today, it is my birthday, but I don't think about it all the time, only sometimes. My wife cooked some salads(?), I brought food to office and we celebrated a little today.
It is enough quiet now, phone calls - not all the time. But tomorrow our company will participate in a sports exhibition in the Expocenter which is not far. I suppose it will be four hard but interesting days! Now I am making the last preparations - lists of goods, etc.
But also I am also waiting for this evening, because my friends will come to congratulate me, I have a bottle of wine for it.
Thank you for attention, it was just thoughts but I will glad if you can show me my mistakes.

Hello Alexander,

Happy Birthday and welcome to Italki. I can understand all of your writing even though there are some mistakes. The most common mistake is that you should always use capital (big) 'I' before a verb. Do you really mean your wife cooked some salads? (салат).

I hope you have a good weekend at the Expo - perhaps you can tell us little about it in your next writing.

Have a great evening with your friends.

Bob