The case is in the details, or important to know!

If you learn Russion it is important for you to remember meaning of some words which can be mentioned in the conversational speech very often:

конЕчно -         the analogue of "sure" or "of course" in English.
                           (Ты придешь сегодня? - Конечно! - Will you come today? - Sure!)

лАдно -             it can be used as "OK" - so you understand how common it is.
                          (- Приготовь что-то вкусное пожалуйста. - Ладно.
                           - Cook smth tasty please. - OK.)

ну -                    it can be a particle or interjection.
                          Very often you can translate "НУ" as "WELL":
                          (Что ты будешь делать сегодня? - Ну, я собирался погулять. -
                          What are you going to do today? - Well, I was going to have a walk.)
                          or it can be translated as "comе on":
                         (Почему ты молчишь? Ну! Отвечай! -
                         Why do you keep silence? Comе on! Answer!)

да нет, наверное - it is one of the most unique collocations in Russian, if to translate
                          literally it means "yes no, maybe" but in fact it always means just "no"
                          but when person give you the answer "да нет, наверное" it means that
                          he\she is not sure or it is a kind of polite refusal.
                          (Ты будешь пить чай? - Да нет, наверное.
                          Would you like to drink tea? - No, I think no.)

тут - там -        very usefull words which help you to orient,
                           their meaning are "here" and "there":
                          тут - here
                          там - there
                          (- Тут так холодно! - 
                          - Это ты на севере не был, вот там действительно холодно!
                          - It is so cold here! - 
                          -You have never been to the North, there is really cold!)

"да нет, наверное" = "нет"