In the Digging section, TimeWeb's focus is on getting hold of time series data and checking its accuracy. The main themes covered here are:

• Meaning - getting to grips with data terminology
• Sourcing - sampling methods
• Selecting - choosing appropriate data
• Verifying - checking the reliability of data

The best way to navigate around the section is to use the navigation bar on the left-hand side of the page. Each of the above themes has a variety of resources to help you understand the issues. The resources include:

• Explanation - a brief explanation of the issues relating to that theme
• Illustration - some examples of using the techniques covered under the theme
• Worksheets - a series of interactive worksheets looking at how the techniques can be applied in practice
• Review - a brief summary of the issues covered under the theme

The best way to start off using this section may be to have a look at the tour for 'digging' which gives an overview of the resources available and what they cover.