I can post a video of my attempts later to see what I'm doing wrong. Is anybody out there able to explain it?

Right now I'm trying to learn the 2/3 save glitch if that helps at all.

Is what you are saying "I can't saveglitch. Help me, internet dudes, explain it ! I am learning 2/3 saveglitch". I guess I would answer that you are probably not using the Source Unpack, you can find it in the resources. The SteamPipe version (the version on Steam) isn't good for saveglitches. If you are already on the Source Unpack, then I can't say anything since I can't magically know what you are doing, so get better.

Basically what PackSciences said. Use Source Unpack. Also, in 2/3 the saveglitch in the OOB route needs you to go past the portal and back behind it, and press your key for save;load right when you're behind it. You know what I mean, right? For some other saveglitches you need to get stuck on the portal, and these are a lot easier (I guess).

Okay thanks guys, didn't realize I had to download another version. I'll give that a shot!