To invite your friends to play simply click PLAY NOW to load the game menu. Choose the MULTIPLAYER option and choose to create a game.
Set up the options for the game and click CONTINUE. That will advance you into the multiplayer lobby. Once you are in the lobby click the FRIENDS button.
All of your friends who are online and not listed as busy (red dot) will be shown. Select which friends you would like to send the invite to by clicking on their name.
---
Replays can only be saved during single play. After you hit the shot just click on the MENU button in the score display and choose REPLAY LAST SHOT. If the last shot went in the hole there is an option to view the replay on the scorecard before you move on to the next hole.
Either during or after watching the replay just click on the SAVE button and give it a name. You can save up to 10 replays at any time.
Please be sure to check out the FAQ section as well. It answers many of the most frequently asked new user questions.