Start by selecting the Skills Tab on the Search For A Skill On Your List page.

Similar to Jobs, you can pin your favorite skill as well as add new skills.

For each saved skill, PreprLabs provides the number of related Labs, Challenges and Resources available.

For more information about the skill, click on the Skill Title in Pinned Skills.

This will open the Skill page, which gives a description of the skill along with related skills and a list of Labs, Challenges and Resources for this skill.

When you have completed a Challenge, it will be listed in User Profile under Verified Skills.