1)Use Facebook lite:
Facebook has launched the Facebook lite page- lite.facebook.com for slow internet connection. It doesn't has features like chats and updates from Application. But you can get post your update, get requests and also view other's updated. Viewing photos and videos is also possible.
2) Use the Facebook mobile page :
Facebook's mobile page m.facebook.com also runs on your computer's browsers. Just type it and it will be similar to that viewed on your mobile. It will not have stuffs from Applicatons and you cannot use chat.
3) Facebook touch page:
Facebook has touch page - touch.facebook.com for Mobile phones with touch features. Like mobile pages, it also runs on your PC's browsers. Give a try at it.