This is a very short visual guide for a junior tester.
Do exploratory testing. That means: be curious, attentive and organized.
Report findings properly, describe the
beauty harm in simple reproducible steps and do not forget to mention, why it is important to fix the bug in next iteration. I think it is bad style to write in bug report something like this: “unless you remove the “border=0” attribute“. Show respect = get respect.
Enjoy the video, which inspired me to write the guidelines: