Self Etching primer... Good or Bad?

Hey guys first time poster. First of all, I'm restoring a 70 dart. I had an old friend doing the body work and paint. He ran off after cutting up my car with alot of my money. So now i'm doing the work on it and i havn't got the slightest clue what i'm doing (i've never done body work). Before he ran off he had me sandblasting body panels and spraying self etching primer. i've got Valspar 1k self etch primer. I've been looking around on the net and i'm not reading too many good things about self ecth primer. Is this good stuff to start with or is it a big mistake. any input would be greatly appreciated. thank you for your time. great site
john