1. Try to set meetings early and not one week before presentation day.
2. Try to get 85% of whatever requires thought (brainstorming, analysis) done together with your group mates during your meeting. Do not use the meetings to just delegate and expect everyone to be one the same page on how the project should be done. Type out everything in point form during the meeting and upload it onto a community that you had set up. The actual typing can be done individually.
3. Do not expect anyone who has not attended the meeting to understand what is typed out.
4. Meet up in person. There are many trust issues and problems involving multiple communications when meeting up online.
5. Consult the teacher/supervisor on what you are going to be handing up. Make sure that your work is in the right direction.
6. When presenting, always be customer-oriented.
7. Be prepared with additional material before your meeting. Share your material with your group-mates.
8. When having a disagreement with a group-mate, try to involve more people. If there are still problems, consult your teacher/supervisor.
9. Delegate as little as possible to the slackers of the group. They are usually the ones who refuse to attend the meetings. Beware of people who tend to change things to their own liking without consulting others. Do not let them compile the project together.  
10. Always try to have GUNG-HO members in your team. They are the ones who will stay up until early morning to do their work. They are also the ones who will try to set up meetings. Some will nit-pick every detail in the project. Some will run out of steam halfway and you would be hardly able to see these people towards the end of the project. Clarify with your group members on which category they belong to.
1. If they belong to the nit-picking type, ask them to write down all their objections that could be brought forward to the teacher. Make more use of this trait of theirs earlier in the project. They can get quite irritating and waste a lot of time towards the end of the project. Put them in-charged of integrating the paper and making it presentable. However, if they happen to belong to the category of people who like to change things without letting others know, do not let them integrate the paper. Rather, integrate the paper together with them in a meeting.
2. If they belong to the type that runs out of steam, try to get them more actively involved at the beginning of the project. These are the type who would try to avoid everyone else towards the end of the project. Do not let these people do the integration of the paper or handing up of the paper. Do not give them anything too challenging or critical towards the end of the project.
11. When compiling the project, do it as a group, or allow someone whom you can trust to do it. After integration, the person should upload a copy of the project (but not too late) to the community. Give the person a deadline. If the person has not uploaded the project by then, call the person up and find out why. If the person has not done his or her part of the project, offer to do it together with him or her. Let your group members know early in the project that changes should be discussed and no member should make an important decision without letting the others in on it. Likewise, work together with your team members in making changes to the project.

These are stuff that I have learnt in my two years in the uni.. Hope that you would find them useful!