Finally getting around to some electronics work, I've a few questions for those in the know...

Planning to start off with some op amps and basic RLC circuits

1) Looking at ~£22 for a soldering iron kit and ~£10 for basic component kit. Are there any pitfalls or good deals I should be aware of?

2) Op amps need an AC supply, loath to buy a ready made one however. Worth building a power supply from scratch?
( @freemo I know you recommended building some LED/RLC stuff first but I can't find the post and since I'll be needing an AC source soon anyway)

3) Any other practical considerations to bear in mind?