The resource curve will allow you to understand how the use of your resources is distributed over time. To view it, you just have to go to the Analytics module and select the Resources Section :
Next, you will need to select the resource(s) you wish to view. You can do this from the filter button ( 
The filter button will allow you to view the stages of the project and the resources you have created in each of them. You can select more than one.
ON THE CURVES
For each of the resources, a group of curves will be generated for analysis. These curves will be the following:
- Base Curve (Light Blue)
Shows the amount of the resource assigned to the baseline of the Gantt Chart. - Projected Curve (Orange)
Shows the amount of the assigned resource on projected dates of the Gantt Chart. - Lookahead Curve (Gray)
Shows the amount of the resource assigned to the Lookahead tasks and their respective dates. - Real Curve (Green)
Shows the amount of Resource installed or advanced. Your percentage is compared to the base amount on the Gantt Chart.