Welcome to A-level ICT
Step 1 - Draw a button on your form and click cancel so you don't go to the macro wizard
Right click on button and go to Build Event
Step 2 - Click on Macro Builder and decide what the button is going to do
Step 3 - Select the Action you want (in the screenshot it is to Open Form)
Step 4 - Which for do you want to open etc This action will then be attached to the button