With this question 'Please give me an example of when you have implemented change in your working life' the interviewer wants to check you can deal with change and adapt accordingly, so you will need to think of examples of a time you have coped with change. It may be that new technology was introduced in a holiday job or internship, or you may have been asked to work with a different system of some sort.
'How are you an effective team player, what do you do' - you need to give examples of when you have been in a team that worked well and describe what you did that helped it work well (maybe football team - set up a facebook group to communicate/reliable - made sure you stood in when necessary etc etc).
'Tell me a time when you had to make a decision with limited information' - maybe a time you had to work on a piece of university work but couldn't get hold of the information you needed/chose a module or A level with limited information. They are looking at your decision making skills and judgement and want to make sure you are someone who can make sensible decisions under the pressure of not all the facts being clear.