I’m glad you liked our free QuickBooks Course! As far as capital contributions are concerned, you should set up a capital account and a draw account for each partner. Select the capital account when a partner invests in the business and the draw account when the partner takes money out of the business. Follow the steps in the how to set up the chart of accounts video tutorial which I have included a link to below: https://fitsmallbusiness.com/set-up-chart-of-accounts-quickbooks-online/
Depending on how the partnership agreement was set up, the partner that contributes labor and ideas could be paid a salary or their 50/50 share may represent payment for his/her contribution to the business; it all depends on what the partners have outlined in their partnership agreement.
All the Best-