Go to link and download

https://drive.google.com/file/d/17di_1ZP3_14J1FZ-sCDu5-hkGzMYgPFn/view?usp=sharing

Put file you just downloaded into C:\Users(YOURNAME)\Saved Games\DCS




Then go to DCS game (you don't have to restart game but if you can't find or it makes you feel better you can restart it)

Go to Options and get ready to set your Controls



Left click once one of the areas the Xbox controls would be in (the green space) to highlight that column in blue activating the "Load Profile" button, which then click on "Load Profile" option


This will bring up the file browser where you need to select the file you just downloaded and put into your DCS folder. Sometimes it appears immediately (green underline) but usually you have to then click the folder icon (red circle) to open the DCS folder.



Scoll down to the bottom and find your F-15C for dummies file, select it and click okay, sometimes it takes a moment to update.



Finally if you want to see the plane motion controls use the drop down and choose "Axis Commands" (green), to search pick the search option and begin typing (purple) and to go back to regular command list pick "All but Axis Commands" (orange).

Feel free to customise and adjust, this is just for a base level so you can progress from there

https://www.digitalcombatsimulator.com/en/files/3313014/

Link above is a tutorial mod made by one fantastic individual to get you started, install instructions for that are on the page of that link, same same as what you just did but different as you are putting the "mod" (mission files) in DCS/Missions folder.

Grim Reapers on YT makes some fantastic informative videos as well.

Good Luck.