Hi, Abdulrahman,

Thanks for your interest in the DC Nonprofit Salesforce User Group! We look forward to your participation. I've already added you to the group. Please upload your organization affiliation and a sentence or two about what you hope to gain from this group and/or how your nonprofit uses or wants to use Salesforce is also helpful so community members can easily identify similar users to exchange best practices with. 

Questions? Here are step-by-step instructions on updating your user profile in Salesforce communities:https://success.salesforce.com/0693000000326xb 

Best,

Amy