Looks like you started off with a full set, so you are going to dig right in!
First off, realize you don't have to use everything in the set. Some people find certain items in PE are too flat and the kit part is actually better. You decide which looks better to you.
I looked at the instruction sheet briefly and it looks fairly straight forward. Some parts are marked with red to show that you have to cut off the kit part and replace with their PE item. Usually a #11 blade and a filing will do the job. Cutting off the PE takes some care or it will go flying off somewhere. Some people cut the PE on a piece of glass. I also sometimes simply tape the piece down and then cut to prevent fly aways. For example, the first sheet asks you to remove the details onthe left fuselage completely and replace it with PE details. The pieces that aren't replacing a kit part simply needs to be glued.
Since its metal, you need to use Cyano glue (i.e. Krazy Glue, Zap instant glue). Lots of the pieces are SMALL, so depending on your eyesight you may want ot use some maginifying lense and lweezers. I also recommend 'slow curing' Cyano glue for the small pieces in odd positions - as this will give you a little bit of time (10-15 secs) to move the piece into the correct angle/area.
The only other part thats a bit different is the panel. You basically sand off the kit's panel details, paint it white, then glue the provided film with the instrument dials onto the sanded panel. You then glue the PE panel with the holes over that carefully to align the holes with the instrucment faces.
The other skill set to learn is bending the pieces as some pieces need to be folded into a 3-D shape. Some people buy dedicated tools like EtchMate, which is around $60 or so. You can also simply use a steel ruler or some other still straight edge, to trap the PE piece to be folded. Align the edge you want to bend with the edge of the straight edge, then slip a Razor blade underneath the PE piece and bend blade toward you to fold the piece.
Hope this helps.