Definatly!
Its not hard at all really, just as long as you don't have mallet hands.
The kits usually come with everything you need, except for a drill and the tap spanner. They come with the drill bit, tap bit, helicoils and the two other tools you need to inset the helicoil with.
You just drill the hole with the supplied drill bit, tap the hole with the supplied tap, then insert the helicoil so that it sits around 1mm into the hole, then hit the end of the helicoil off with the tool provided.