Most guides for Simba for OSRS are outdated because most of the "old guard" gave up with OSRS/RS mostly due to goldfarming and private scripting. At the start a lot of devs took interest in OSRS but once all the profiteering happened they started to get annoyed with the people who were profiteering since they all took everything and contributed nothing back. bitched about stuff not been updated fast enough for them and abusing the devs for them loosing money (you have to remember that the SRL/Simba devs did all the work for free). This led to SRL-OSR to death since no one maintained it. Aerolib came along with only Flight maintaining it and now he's gone MIA so that's going to die as well and he never found time for documentation and guides.