Amateur satellites

Thanks to Tim GW4AXE, my new challenge is to be amateur satellite operation. He tells me some software really helps. See https://oscarwatch.org . 

I think my first step will be FT4 RX using the V2000 omni antenna. I need to download the software later.

Back in the early 1970s I remember the thrill of hearing east coast USA stations on 2m SSB RX via Oscar 6 and 7. My only satellite QSO was 2m to 10m (I think) but I cannot recall the satellite. It must have been near sunspot minimum when 10m was quiet. Probably some time in the 1980s?

UPDATE 0930z:  Excuse my total ignorance but what are “TLEs” please? It sounds like I should know, but don’t!!

UPDATE 1335z:  What should have been really easy wasn’t for me because of my brain fog. I was expecting to get a standard download but instead was presented with a load of GitHub files. I downloaded what I thought was the right one, then nothing. For now I have given up. My brain fog is the result of my 2013 stroke - it’s like walking through treacle all the time and my head is never clear.