Hello 
Nice to see you want to get going with scripting! We need more of you ^^
I highly recommend these two guides as your first start. They will give you a good foundation and cover the most basic things.
- How to script in OpenFunScripter - video tutorial - howto - EroScripts
- Slibowitz’ how to script video tutorial series - Episode 1 - Cowgirl and Reverse Cowgirl - howto - EroScripts
You can also check the tag scripting-tutorial on where you find all sorts of tutorials that scripting related.
I hope this helps! If you come up with any direction questions, feel free to post them here as well. We are happy to help.