First of all, GSA Search Engine Ranker from GSA (German company), Xrummer AI, Xevil from Botmaster (Russia), Scrapebox, and A-Parse - those kinds of tools exist and keep updating, built for SEO agencies and used for decades. So you'll see their documentation from decades ago, and even these tools stay up to date with the latest API integrations, new options and engines. The basics and workarounds remain the same. Also, as SEO strategies are the same, people use tiered link building, link wheels, 301 redirects, expired domains with 301 redirects, etc., for decades, and the workaround stays the same. So it's a must and better to read all the posts, even the old ones, from here, Black Hat World, GSA community, their wikis.. if you're serious about SEO.
Specifically for GSA SER, you can get answers here from the community in no time. If you look around Xrummer or Xevil, you'll see most content is from Russia and even older documentation, however those are goldmines.
If you're stuck somewhere, ask the specific question in the GSA forum or just open a thread here, and there are many GSA users who will reply and help you solve it. After all, it's a powerful, up to date tool I use for all my websites' link building strategies. If you want to kick start, grab a link list and try to build a similar setup your list provider suggests, and you can make the best use of the list.