Having a credible and reliable sources are important in performing research especially on the internet. This is because nowadays with just one click all information can be check on the internet however one is not sure if that is the right one that can then be validated thus there are strategies to know information if they are credible and reliable. One of it is the site one knows and trust mostly is important as it can help narrow down what you're looking for. Another would be checking on the date, select the latest one for it to be more reliable. Another would be checking the credentials for the writer as for you to be sure information provided is credible and lastly check if there are comments such as reviews from the source and the author to make sure that other people are also using the information provided which means it is reliable.
