I have been building circuits for a long time and may have picked up some ideas that may be new to more recent builders. There is nothing very hard or astonishing about the tips but they have helped me and may help you too. In my mind a tip is not an electronics project ( but occasionally may involve putting together a mini-project ) or full directions on say "how to solder". A tip is more a little trick in technique or approach. All of the following should fit this definition.