Responding to Weak 2 opening bids  

Overview

Your partner has  6-10 TP along with an adequate six card suit. What you bid depends on how well your hand supports your partner's suit. As responder you will have either, a weak hand with less than 9 points, a medium hand with 10-13 points, or a strong hand with 14+ points.

Responding to your Partners Weak 2 Bid

Unless you have an independent suit that can play opposite a singleton without a problem.
1. With a singleton in partner's suit and no strong suit of your own, say nothing unless you have 16+ HCP.
2. With a doubleton in partner's suit, you will need 15 HCP to keep the bidding going and if you have an honor (Ax, Kx, Qx) in your doubleton of partner's suit , and a good hand in other suits 14 HCP is enough.
3. With three or four card support for partner usually you should raise partner to the three or four level.
NB: If you and your partner have a 9 card fit or longer your opposition will of necessity have a 8 card or longer fit in another suit.... but luckily with preemptive bidding..... you and your partner have found your fit first!