Hi Im planning to go visit my friends in U.K but I would also like to know some places where I definately have to ga... so Where do you recommend to go if Im first time in UK

It all depends on the time you have and what sort of things interest you.
For general sightseeing London is a must with all the famous buildings and places, and you can get open top bus tours which take you round all the main sights.
I would also strongly recommend Edinburgh, Glasgow, Liverpool and Cardiff as towns/cities worth a visit.
If you want to take in some history of the industrial era then Birmingham and the West Midlands have some of the best museums and certainly more miles of canals than Venice.
Viewing countryside will take some time as the travel will take you to all corners of Britain. Go from Kent across the south to Cornwall then up through the Midlands and over to mid to north Wales, don't miss out Chester, then up to the Lake District back over the Pennines towards Newcastle upon Tyne, North through Durham and into Scotland. Up the east coast to Aberdeen, across through Inverness and on up to Mallaig. If you can then manage it try and get out to the western isles and you've pretty much seen as much as you can without living here all your life.
Enjoy your trip.

One of my friend is living in Glasgowand I will be staying there,
another oone has so strange name of the town that I didnt remembered it, how is the weather in the end of November? and I will rent a car and I want to se as much I can :P because I havent been anywhere lately

Weather at end of November can be cold especially in Scotland beware of icy roads in upland areas. Yes we have many strange named towns so I won't even guess at that one. I would recommend specifying a 1.8 litre diesel engine car if you are going to do a lot of travelling. This will be spacy, economical and easier to cope with our up and down road system. Fill up at pumps using black or yellow handled/ piped filler. Don't put petrol in it or you'll end up with a big bill.
If you're coming in November and going to Glasgow I would see as much of Scotland as you can before heading south where it should be a little warmer but the second week of December often is very cold, then it just goes wet after that.

Thanks for assistance

My pleasure and if you are going to visit Birmingham let me know and I'll try and arrange a meet for a drink or something if you're agreeable.

Il let you know...
I have exams end in 23 of november so thet I hope to get a flight in 30 or in 1 of december