1. Keep a waiting list of participants instead of rejecting them when you have more participants than needed. Some of participants might not show up in the studies.

2. Leave a break between studies. Some participants might stay longer and you need a break to keep yourself energetic.

3. Native speakers are more likely to give better quotes in qualititave studies. (not racism )

4. Prepare bottle water if you need to interview them.

5. youcanbook.me can be useful for scheduling participants (set minimum notice under advanced to avoid getting participants scheduling themselves in at the last moment).

6. BB Flashback Express (http://www.bbsoftware.co.uk/BBFlashBack_FreePlayer.aspx) is a good, free screen recorder for windows that can capture video from the screen and a webcam at the same time.

7. Prepare a checklist of what needs to happen in the study session, to avoid missing anything important.

8. If you want the participant to take a break from a task, you can give them a questionnaire to fill out in the middle of your experiment, instead of at the end.