I'd definitely recommend this guide over the older one. I'm also completely new to modding and I started with the older guide, only to realize some stuff was outdated and confusing. I felt that this guide was very organized, up-to-date, and helpful even for complete beginners. As long as you read very carefully and follow the directions, everything should generally work out. The only thing to be aware of is that it does take a lot of time and hard drive space to get through it all. I started about two weeks ago and I'm still working my way through, and after installing all the mods, it's taken around 70GB of space, plus an additional 37GB for the compressed mod downloads (you can delete the downloads if you need to, but it could be helpful to leave them in case you want to reinstall without downloading them again). Also, use Mod Organizer 2 from the zip file, not the installer! I used the installer only to realize towards the end that I needed the zip file version to use one of the tools, Merge Plugins.