I have watched many videos and read the ROBLOX wiki over and over, but I can't seem to find any way to add gear from the ROBLOX catalog to my starter gear in ROBLOX Studio. I am not to great at scripting and am slowly learning, so if it involves scripting, please let me know. Thanks :D
You can use this command in the Roblox Studio Command Bar to load any asset from the roblox catalogue, and place it in the workspace:
game:GetService("InsertService"):LoadAsset(ASSET_ID_HERE).Parent = game.Workspace
Some assets are locked (such as models that are not for sale) and will cause this command to error. That being said, it'll work perfect for your purpose.