No tutorial. Frankly, I always thought of it as too simple to need a tutorial but that might be wrong thinking.
For TacOps v4.
Designing a scenario for human vs human play based on one of the custom scenario templates.
Run TacOps.
Check mark the box labeled "Standard Scenario".
Check mark the box labeled "Two Players" or the box "Multiplayer Teams - Network" [plus the Host box]. I prefer to design in "Multiplayer Teams - Network [Host]" mode. Technically you can design in any mode, but the other modes can be confusing to a new user because they include modal limitations.
Click the OK button.
When asked to select a scenario, choose one of the following custom scenario templates - Custom Scenario US Army.sce, Custom Scenario USMC.sce, or Custom Scenario CA CMBG.sce. Which to choose depends on whether the Blue Force is to be Canadian, US Army, or USMC. Picking the appropriate template will provide a useful short cut for later adding predefined unit groups for that branch. If you don't care about that shortcut then it doesn't matter which template you use.
When asked to select a map, choose any TacOps map.
When asked, enter a blue password or leave blank. When asked, enter a red password or leave blank. Most people leave the passwords blank at this time as a convenience. If passwords are later desired they can be added with the Options/Change Password menu item.
At this point you should be looking at an empty map.
Check mark the "Orders/Blue Unit Orders" menu item. This lets the program know that whatever you do next is to be done for the Blue Force. When you want to work on the Red Force you would check mark the "Orders/Red Unit Orders" menu item. Same for the other available force colors.
From here on its pretty much just adding unit markers to the map by (a) using the "Options/Add One Unit" menu item to add one unit marker to the map at a time (example: one tank marker containing 1 to 15 tanks) or (b) using the "Options/Optional Units" menu item to add a predefined group of unit markers to the map (example: Armored Cavalry Regiment).
When using the "Options/Add One Unit" menu item, you are free to add units from either the Allied list or from the OPFOR list. In other words, if you are adding Blue units you can choose to equip Blue with either or both Allied or OPFOR items - same for Red and the other colors.
Same goes when using the "Options/Optional Units" menu item. You can equip Blue with an OPFOR Motorized Rifle Battalion, etc.
Explore the Options menu list for other things that you can do.