I will shortly order this.
Practical Electronics for Inventors by Scherz, Paul
Some of the wire i strip and solder is a dark silver color.
Its a pain to solder to copper.. Is it aluminum?
I read that a Al forms a non conductive oxide on exposure to air.
You are right. It took longer for me to get the solder to melt.The wire is likely "tinned" with lead free tin alloy. This alloy has a higher melting point than traditional lead/tin solder. Just re-tin the leads with some solder and that liquid solder will quickly dissolve the tin and all should be fine. Tinned leads solder very easily - and eliminates the need for a third hand.
You cannot, generally, solder Aluminum to Copper. Aluminum creates an oxide barrier as soon as it is exposed to air.
Where do you get the wire form?