The most basic tools needed when starting electronics are a pair of side-cutters and half-round nose pliers or similar.
A soldering iron is useful even when building breadboard circuits as some components, such as potentiometers will need to have wires soldered to them in order to plug them into the breadboard.
Uses of small side-cutters in electronics – an article and video for beginners.
Half-round nose pliers, long-nose pliers or similar can be very useful in electronics work. This article explains what they can be used for.
The basics of soldering irons for beginners in electronics