approachable Definition

1. Friendly and ready to listen and help.
2. Capable of being reached.

Thesaurus: accessible, available, convenient, attainable, obtainable.
3. Accessible; comparatively easy to understand.

Example: gave a very approachable account of Freud
Thesaurus: sociable, friendly, agreeable, warm, engaging, receptive, congenial, outgoing; Antonym: aloof, stand-offish, intimidating.