Tom the Academy kit is a pretty straight forward build. There are a few things to look out for. If you google "1/48 Academy F-4B build" you should find plenty. My biggest challenge was with the multi colored plastic, I found it hard to see whether the joints between the two colors were. So Primer is your friend! In case you haven't seen it, here is a good basic quick build from cybermodeler.
http://www.cybermodeler.com/hobby/builds/aca/build_aca_12232.shtml
There are lots of online discussions about intakes and air scoops and such on line, myself I think they are pretty overblown the shapes are pretty darned good just as they come out of the box. And if you go to my blog here you can see my VF 84 build. The areas I will look out for more when I build this next one is the way the tail all fits together, the lower section that holds the exhaust is too narrow, and needs sprue or rod inserted to spread it so it fits the main fuselage, mine still ended up a bit shy. Also I will take more time and care fitting the intakes so I don't have to sand as much. Anyway good luck!